PICS: Star Sightings

Keri Russell appeared in a green trench coat for the Altuzarra for Target launch event in New York City on September 4.

Ivanka Trump showed up in all black for the Altuzarra for Target launch event in New York City on September 4.

Gwen Stefani looked fabulously slim given her mom-of-a-young-baby status as she stepped out in NYC on Thursday. The mother of three, including six-month-old Apollo, paired gray tailored pants with a black top, topped off with fire engine-red lips.

It's been a while since Renee Zellweger has been spotted on  a red carpet, but she did so in style on Sept. 3. The Bridget Jones' Diary actress showed up to the 2014 Couture Council Award Luncheon Benefit for the Museum at FIT honoring Carolina Herrera at Lincoln Center in New York City.

Jason Segel and Cameron Diaz's Sex Tape has gone international! The romantic comedy duo ventured across the pond for the romantic comedy's photocall on September 3 in London, England.

Jessie J sported a dangerously high slit at the GQ Men of the Year Awards at The Royal Opera House on September 2 in London.

Gerard Butler posed on the red carpet of the GQ Men of the Year Awards at The Royal Opera House in London on September 2.

Jay Z hit the Philadelphia Made in America Fest wearing a Muhammad Ali Roots of Fight tee.

The Maroon 5 frontman and "more masculine" newlywed brings his handsome face to the Today show for their concert series.

The Sin City actress was too cute celebratin the Budweiser Made in America Music Festival along with American Eagle Outfitters. Jay Z and Beyoncé were also at the festival and couldn't keep their hands off each other.

To the delight of her fans, Uma Thurman blew a kiss upon arriving to the Nymphomaniac: Volume 2 - Directors Cut premiere during the 71st Venice Film Festival on September 1 in Venice, Italy.

Maroon 5 frontman Adam Levine brought the crowd to their feet on NBC's Today show on September 1 in New York City.

Al Pacino gives a thumbs up at the premiere of Manglehorn at the 71st Venice Film Festival in Italy on August 30.

You know they're showing a lot of skin when these are Kylie and Kendall Jenner's more conservative outfits. Dressed in black and baring midriff and undergarments, the Keeping Up with the Kardashians teens showed up to DuJour Magazine's Jason Binn celebrating Kendall and Kylie Jenner's Bruce Weber shoot on August 28 in New York City.

Where's Justin Theroux? Jennifer Aniston posed solo in a shimmery Saint Laurent mini-dress and black blazer at the premiere of Life of Crime at the ArcLight Cinemas in Hollywood, Calif. on Aug. 27.

Real Housewives Of Miami star Joanna Krupa rocked a short, blue romper that showed off her toned legs when she participated in the Hollywood Charity Series Of Poker at the Seminole Hard Rock Hotel & Casino in Tampa, Florida on August 27, 2014. The event benefited Habitat For Humanity.

True Detective and Parenthood star Alexandra Daddario stepped out in celebration of Juicy Couture's new fragrance, Viva La Juicy Gold Couture, on Tuesday, August 26. "Everybody should incorporate fragrance into their everyday beauty routine. It's something that ties together your outfit," she told ET.

Birdman star Emma Stone walked the red carpet in emerald at the movie's premiere during the Venice Film Festival on August 27.

Matt LeBlanc and Andrea Anders kicked off the Emmy festivities at the Showtime 2014 Emmy Eve Soiree at Sunset Tower on August 24 in West Hollywood.

"Tattoo" singer Hunter Hayes showed off a temporary henna tattoo on August 22 while performing on NBC's Today show, where he announced his Tattoo (Your Name) Tour.

Brian May and Adam Lambert rocked out in Perth, Australia during the Queen and Adam Lambert Tour on August 22.

New Dancing with the Stars judge Julianne Hough showed up off her sexy dancer's body at the 2014 Heineken US Open Kick Off Party on August 21 in New York City.

Action star Dwayne Johnson and his supermodel-turned-actress co-star Irina Shyak both dressed to impress while walking the carpet at the European premiere of their film Hercules at the CineStar theater in Berlin, Germany on August 21.

Mad Men star Jon Hamm feigned surprise when he showed up for the screening of Million Dollar Arm at The May Fair Hotel in London on August 21.

Fashion fail?! Tyra Banks showed up wearing what looked to be an ill-fitting, futuristic jumpsuit to America's Next Top Model Cycle 21 premiere party presented by NYLON and LINE in Los Angeles on August 20.

17-year-old Chloe Grace Moretz, best known for her role as the purple-haired Hit Girl in the Kick Ass franchise, looked classy and cute at the red carpet premiere of her upcoming drama If I Stay at the TLC Chinese Theater in Hollywood on August 20.

During Lindsay Lohan's appearance on The Tonight Show on August 20, host Jimmy Fallon cheerfully helped the Mean Girls actress complete the ALS Ice Bucket Challenge, leaving her absolutely drenched, shocked and freezing.

Seth Meyers addressed the press at the 66th Annual Primetime Emmy Awards preview day at Nokia Theatre L.A. Live on August 20.

The True Blood hunk brought his chiseled body to the launch of New Balance and James Jeans powered by ISKO.

Who's hotter: the blonde or the brunette? Hart of Dixie actress Jaime King posed with her pal and Sin City: A Dame To Kill For star Jessica Alba at the sequel's premiere at TCL Chinese Theatre on August 19 in Hollywood, Calif.

Singer, TV personality and fashion designer Kelly Osbourne showed off some of the new ensembles that make up her upcoming fashion line Stories…

The first look and photo shoot was held in New York City on August 19.

Hilary Duff was snapped in a floppy hat and ripped jeans while leaving lunch at La Conversation Café in Los Angeles on August 19.

This is what it looks like when a supermodel and a pop star dine on donuts! Rita Ora and Chrissy Teigen were spotted eating sweet treats while celebrating the launch of the DKNY MYNY fragrance at General Worth Square at Madison Square Park on August 19 in New York City.

The Real Housewives of New Jersey star Melissa Gorga and her husband Joe Gorga celebrated his 40th birthday in style at Vic & Anthony's Steakhouse at the Golden Nugget Casino in Atlantic City, New Jersey on August 16.

Is that Jared Leto under all that hair? The Oscar winner wore his most hipster attire when his band 30 Seconds To Mars visited Music Choice on August 18 in New York City.

Golden Globe winner Richard Gere dressed down in jeans, a t-shirt and a green corduroy jacket for the premiere of his new, independent animated film Henry & Me at the Ziegfeld Theatre in New York City on August 18.

Kick Ass star Chloe Grace Moretz wore a sophisticated and stylish floral print dress with a white collar to the premiere of her new romantic drama If I Stay at the Landmark Sunshine Cinema in New York City on August 18.

Fashion Police host Kelly Osbourne was all smiles on Aug. 16 at the 3rd Annual BeautyCon in Los Angeles presented by Elle. And who can blame her--a whole day of talking beauty sounds amazing!

Heidi Klum's swingin' style caught her Project Runway cohort Tim Gunn off guard when the two met up on the red carpet at the 2014 Creative Arts Emmy Awards on Aug. 16 in Los Angeles, Calif.

Channeling Madonna? "Shine Ya Light" singer Rita Ora rocked out in tattered blue jeans and a white, beaded bikini top at the V Festival at Hylands Park in Chelmsford, England on August 17.

Sin City: A Dame To Kill For star Jessica Alba showed her Los Angeles Dodgers spirit when she threw the ceremonial first pitch before the game, which pitted the home team against the Milwaukee Brewers at Dodger Stadium on August 17.

Joe Jonas celebrated his 25th birthday with brother Nick and friends at the Encore Beach Club at the Wynn in Las Vegas, Nevada on August 16. In a muscle t-shirt, he overlooks the pool-party scene.

Ed Sheeran performs on the first day of the V Festival at Hylands Park in Chelmsford, England on August 16, 2014.

Demi Lovato was up bright and early for ABC's Good Morning America on August 15. The actress and singer was snapped on stage at Rumsey Playfield in New York City.

Can you imagine if Veronica Mars joined forces with Scandal's Olivia Pope?! That basically happened on Aug. 14 when a pregnant Kristen Bell posed with new mom Kerry Washington at the Hollywood Foreign Press Association's Grants Banquet in Beverly Hills, Calif.

Disney's Maleficent actress Elle Fanning looked classically beautiful in a bright red dress which she wore to the Hollywood Foreign Press Association’s annual Grants Banquet at the Beverly Hilton Hotel in Beverly Hills on August 14.

Arrested Development star Michael Cera struck a pose at the photo call for his Broadway play This Is Our Youth outside the Cort Theater in New York City on August 14.

Jared Leto was snapped in a bright tank top and shades while footing it through New York on August 14.

Red singer Taylor Swift showed off her svelte figure on The Tonight Show starring Jimmy Fallon, but also wasn't afraid to go geeky when she joined Jimmy on the Ew! show!

Katie Holmes was caught making some goofy faces as she hung out with some adorable kids at the Marvel Universe LIVE! NYC world premiere on August 13 in New York City.

Demi Lovato rocked this super-colorful, form-fitting dress with a black leather jacket and piano-key clutch as she went out and about around New York City on August 13.

Prince Harry was snapped in London giving a rousing speech to the British Armed Forces team ahead of the Invictus Games at Potters Field Park on August 13. The Invictus Games is an international Paralympic event for wounded soldiers named after the poem by William Ernest Henley.

Joe Manganiello and Sofia Vergara took in Justin Timberlake's Los Angeles show in style, partying at a private PUMA-hosted event at Hyde Staples Center. The hot couple celebrated with Vergara's Modern Family co-star Jesse Tyler Ferguson and his hubby Justin Mikita; Glee star Lea Michele and her beau Matthew Paetz; and newlyweds Naya Rivera and Ryan Dorsey.

Kim Kardashian marched through the streets of New York on August 12, wearing a beige top and green skirt.

Britney and boyfriend David Lucado were snapped grabbing lunch in Calabasas on August 12.

Jessica Alba enjoyed her time in the makeup chair at Good Morning America in New York on August 12.

Jason Schwartzman became one with nature during the photocall for Listen Up Philip at the 67th Locarno Film Festival in Locarno, Switzerland on August 12.

This is one glamorous trio. Pretty in pink, Katie Holmes posed with her beautiful co-stars Odeya Rush and Meryl Streep at The Giver premiere after-party on August 11 in New York City.

Action star Jason Statham and supermodel Rosie Huntington-Whiteley looked inexcusably gorgeous at The Expendables 3 premiere at TCL Chinese Theatre on August 11 in Hollywood, Calif.

Actor Peter Capaldi, who plays the 12th incarnation of The Doctor on the hit BBC series Doctor Who, stood with his on-screen companion Jenna Coleman outside their TARDIS – a time machine/space ship that looks like a 1960's police telephone box – during a promotional tour at Dendy Opera Quays theater in Sydney, Australia on August 12.

Taylor Swift wore a stunning gown in her signature red color, while walking the red carpet of The Giver premiere in New York on August 11.

Sir Paul McCartney thrilled the crowd at Los Angeles' Dodger Stadium on August 10. It had been 48 years since McCartney last performed at the venue with The Beatles.

Jennifer Lopez's Maid In Manhattan on-screen son is all grown up! J.Lo with awards show host Tyler Posey, who was donning a coconut bra at the time, during the 2014 Teen Choice Awards in Los Angeles, Calif. on Aug. 10. "I know we haven't seen each other since Maid in Manhattan, which was forever ago. But I thought that maybe if you needed a backup dancer, I'd fit. What do you think?" Posey inquired when Lopez hit the stage.

She quipped back, "If I say yes, will you stop?"

Later, the American Idol judge Instagrammed: "Aww look at Ty all grown up!! @i_love_harveys #teenchoiceawards."

"Skyscraper" singer Demi Lovato not only opened the 2014 Teen Choice Awards with an exciting performance of her hit single "Really Don't Care," but she was also the night's first recipient of a surfboard trophy for Choice Summer Song. The ceremony was held at the Shrine Auditorium in Los Angeles on August 10.

Singers Jordin Sparks and Jason Derulo were all smiles and hugs as they walked the blue carpet at the 2014 Teen Choice Awards at The Shrine Auditorium in Los Angeles, Calif. on August 10.

Pretty Little Liars beauty Lucy Hale struck a pose for the launch of her clothing collection at Hollister in Los Angeles, Calif. on August 9.

Fancy singer Iggy Azalea donned a colorful ensemble for her performance during The Elvis Duran Z100 Morning Show live at NBC's TODAY show on August 8 in New York City.

Let's Be Cops stars Damon Wayans Jr., Nina Dobrev and Jake Johnson embraced on the red carpet of the film's Hollywood premiere on August 7.

12 Years a Slave star Michael Fassbender was really working the crowd when he showed up to a "Meet The Actor" event at Apple Store Soho on August 7 in New York City.

New Girl beauty Hannah Simone was a stunner in this form-fitting, dark blue/black crop top and matching skirt at the red-carpet premiere of Let's Be Cops – starring her New Girl co-stars Jake Johnson and Damon Wayons, Jr. – at the ArcLight Theater in Hollywood on August 7.

Teenage Mutant Ninja Turtles stars Megan Fox and Will Arnett posed together at the film's New York premiere on August 6 at the AMC Lincoln Square Theater.

It's not every day we see a sister from the Jenner/Kardashian clan posing fully clothed! Keeping Up with the Kardashians star Kylie Jenner traded her cleavage and leggy looks for an edgier all-black ensemble at the The Imagine Ball on August 6 in West Hollywood, Calif.

The Giver actress Katie Holmes stepped out in a glamorous, sheer black ensemble at the Lexus Short Films Life Is Amazing premiere at the SVA Theater in New York City on August 6.

Kellan Lutz looked dapper at the German premiere of The Expendables 3 in Cologne on August 6.

Rob, you missed a button! Twilight star Robert Pattinson looked as charming and disheveled as ever at a Q&A for The Rover in London, England on Aug. 6.

Former Dancing with the Stars pro Julianne Hough showed up seriously stylish to the Roland Mouret for Banana Republic Collection Launch on August 5, 2014 at White Street Restaurant in New York City.

X-Men: Days Of Future Past star Michael Fassbender posed in front of a poster for his new movie, the indie dramedy Frank, which premiered at the Sunshine Landmark theater in New York City on August 5.

Game Of Thrones' Sean Bean, Heroes' Ali Larter and Nurse Jackie's Morris Chestnut were all smiles at the premiere of their new TNT crime drama Legends at the Tribeca Grand Screening Room in New York City on August 5.

The Vampire Diaries actress Nina Dobrev flashed her gorgeous smile while rocking a black and gold dress and killer hoop earrings while sitting down with host Jimmy Fallon on The Tonight Show, filmed at the famous Rockefeller Center in New York City on August 5. WATCH.

The Duke and Duchess of Cambridge walked through an installation of ceramic poppies on August 5, placed in the moat of the Tower London. The installation was made to commemorate the First World War and each poppy represents an allied victim.

Mad Men fans' favorite on-again, off-again couple reunited on the red carpet on Aug. 4. Christina Hendricks and John Slattery, who play Joan Holloway and Roger Sterling on the AMC show, posed together at the photocall for God's Pocket at BFI Southbank in London, England.

Wesley Snipes knows how to pose at a premiere! The actor showed up with his action co-stars for the world premiere of The Expendables 3 at Odeon Leicester Square on August 4 in London, England.

The gorgeous Taylor Schilling wowed in a stunning, form-fitting purple dress at the Director's Guild of America's panel discussion of her Netflix series Orange Is The New Black in Los Angeles on August 4.

As August 4 marked the 100th anniversary of Great Britain declaring war on Germany in the First World War, Prince Harry attended the unveiling of the Folkestone Memorial Arch, which was erected to mark the event.

Miley Cyrus kept it colorful for her night out at New York City's Nobu on Aug. 3. The "Wrecking Ball" singer made a statement with her colorful braids, and that statement was quite reminiscent of My Little Pony.

Actor and daredevil Johnny Knoxville went super casual - in khakis, plaid and a denim jacket - to the red carpet premiere of his new film Teenage Mutant Ninja Turtles at the Regency Village Theatre in Westwood, Calif. on August 3. In the film, Knoxville lends his voice to the TMNT team leader Leonardo.

Real Housewives Of New Jersey stars Melissa and Joe Gorga showed up at the annual White Party hosted by the Shrine at Foxwoods.

Pretty Little Liars star and You Sound Good To Me singer Lucy Hale rocked out at the Hollister House in Santa Monica, Calif. on August 3.

Two-time Oscar-winning star Kevin Costner rocked a killer beard and dark specs to the DuJour magazine screening of his upcoming drama Black And White at the UA Theater in East Hampton, New York on August 3.

Think Like A Man Too star Kevin Hart donned some chic thick-rimmed glasses to rock out at Beyonce and Jay Z’s On The Run concert at the Rose Bowl in Pasadena, Calif. on August 2.

Katy Perry performed for President Barack Obama at the State Dining Room of the White House on July 31 during a concert commemorating the Special Olympics.

Rihanna ditched the braless/see-through top combo for a night and instead went with a rather conservative, SUPER style-savvy dinner outfit on July 31. The S&M singer was spotted leaving Da Silvano Restaurant in New York City wearing some boyfriend-cut jeans, little sandal heels and a button-down blouse. This is a BIG change from her usual scantily-clad style statements.

This is what 46 looks like when you're Julia Roberts! The A-list actress was showing A LOT of leg when she stopped by The Tonight Show starring Jimmy Fallon on July 31 in New York City.

The Pretty Little Liars star and You Sound Good To Me singer rocked out on the Honda stage at the iHeartRadio Theater in Burbank, California on July 31.

The Voice coaches Blake Shelton and Usher partied in Atlanta on July 30 for the 15th Anniversary Kick Off Celebration of Usher's New Look.

Singer Lana Del Rey made James Franco's New York City premiere of Child of God on July 30 a little cooler when she showed up to give a pouty pose.

Parks and Recreation star Aubrey Plaza and Amazing Spider-Man 2 actor Dane DeHaan were all smiles at the screening of their indie romantic zombie comedy - or Zom-Rom-Com - Life After Beth at the Crosby Street Hotel in New York City on July 30.

Realizing that it's impossible for her to ever look anything less than stellar, Taylor swift wore this 80s inspired colorful blue crop top and matching skirt under a sheer white cover after leaving a gym in New York City on July 30. This is what she looks like after working out.

Megan Fox wowed at the Latin American premiere of Teenage Mutant Ninja Turtles in Mexico City on July 29.

Actor Paul Rudd, who is starring in Marvel's upcoming superhero adventure Ant-Man, kept it casual at the after party for The Cinema Society's special screening of Marvel's Guardians Of The Galaxy. The party was held at The James Hotel in New York City on July 29.

Singer and actress Selena Gomez rocked a snake skin print crop top and tight black jeans to the Los Angeles premiere of her new indie comedy Behaving Badly at the ArcLight Cinemas in Hollywood on July 29.

Marvel's newest band of super-cool anti-heroes Chris Pratt, Zoe Saldana and Vin Diesel attended The Cinema Society's screening of their explosive new film Guardians Of The Galaxy in New York City on July 29.

Andi Dorfman and her fiancé Josh Murray were snapped leaving Good Morning America in New York on July 29.

Justin Bieber acknowledged fans and photographers as he exited a studio in Hollywood on July 29.

Lady Gaga laid a friendly kiss on Tony Bennett as the two posed for their Cheek To Cheek taping at Lincoln Center on July 28 in New York City.

The stunning actress Nicola Peltz wore a bold-colored gown with a deep plunging neckline - that revealed quite a bit of skin and cleavage – to the Japanese premiere of her film Transformers: Age Of Extinction, screened at the Toho Cinemas Nihonbashi in Tokyo on July 28.

Chrissy Teigen was all smiles in this sexy, sheer black dress that she wore to DeJour Magazine's gala celebration of the 20-something supermodel at NYY Steak restaurant in New York City on July 28.

Kristin Cavallari made her triumphant return to the red carpet after giving birth to her second son Jaxon two months ago. Needless to say, the former MTV reality star looked amazing in a crimson Zac Posen gown as she arrived for the International Fashion Film Awards in Beverly Hills on July 27.

Guardians of the Galaxy star Chris Pratt was the honorary pace car driver at the NASCAR race at the Indianapolis Motor Speedway on July 27, leading 43 drivers around the track to get the race started.

"I can't believe it's taken me 35 years to see NASCAR in person. This is unbelievable. I am seriously hooked," he told ESPN.

Though Zoe Saldana refuses to confirm the pregnancy rumors, the Guardians of the Galaxy actress was sporting quite the bump when she stopped by Good Morning America in New York City on July 28.

Lindsay Lohan sends her love from the the Weisses Fest in Linz, Austria on July 26.

Emily Deschanel appeared at Comic-Con's Bones press line on July 25, wearing an aptly colored black and yellow dress.

Vin Diesel made quite the entrance at the UK premiere of Guardians of the Galaxy at Empire Leicester Square on July 24 in London, England. Sporting an "I Am Groot" t-shirt-- he voices the character in the film-- the actor also chose to walk the carpet on stilts!

Alright, alright, alright! Oscar winner Matthew McConaughey showed up smiling to the Paramount Studios presentation during Comic-Con International 2014 on July 24 in San Diego, Calif.

Teen Wolf star Tyler Posey got wild on stage while presenting the OMG Moment Of The Year at the MTVu Fandom Awards, held at Petco Park in San Diego as part of Comic-Con International 2014 on July 24.

Actor Josh Hartnett talked about his Showtime series Penny Dreadful to an auditorium full of fans during Comic-Con international 2014 at the San Diego Convention Center on July 24.

Actor Pedro Pascal, best known for playing the legendary Price Oberyn 'Red Viper' Martell on HBO's Game Of Thrones, grabbed a cold brew at the WIRED Cafe at ComicCon inside the Omni Hotel in San Diego on July 24.