Must-See Star Sightings

Sex and the City star Sarah Jessica Parker could not have looked more glamorous if she tried in this stunning gown. The actress stepped out for the 2015 New York City Ballet Fall Gala on Sept. 30 in New York City.

The 34-year-old singer and actress looking stunning in a gorgeous, low-cut champagne gown that she showed off in all it's sparkly glory on the red carpet at the New York City Ballet Fall Gala at the David H. Koch Theater in New York on Sept. 30, 2015.

The supermodel was picture-perfect as usual walking the streets of New York City on Sept. 30.

The human rights lawyer stepped out in a gorgeous green dress in NYC on Sept. 29.

The youngest Kardashian-Jenner flaunts her curves as she makes her way to Smashbox Studios with boyfriend Tyga and Kourtney (not pictured) in Los Angeles on Sept. 29.

Orange Is the New Black actress Laverne Cox had her voice heard at the 2015 Social Good Summit at 92Y on Sept. 28 in New York City

The Freeheld co-stars smiled on the red carpet at the film's New York Premiere on Sept. 28.

Pop star Katy Perry brought a lot of energy to her performance at 2015 Rock in Rio on Sept. 27 in Rio de Janeiro, Brazil.

The Intern co-stars smiled at their film's U.K. premiere in London, England on Sept. 27. 

The "Waiting For Tonight" singer was pretty in pink as she attended her first event as the new Global Advocate for Girls and Women at the UN Foundation, the "Right Smart Now: Investing in Girls, Women and Gender Equality" dinner in New York City on Sept. 25, 2015.

The Scandal star had a busy day in New York City! Among her many activities on Sept. 25 included a stop at AOL Build, an interview series where she spoke about the hit ABC drama and its showrunner, Shonda Rhimes. Washington struck a fierce pose before the sit-down, showing off her leather crop top and floral skirt ensemble.

The couple strikes a pose before heading into the UN Foundations' Gender Equality Discussion in New York City on Sept. 25.

The Voice judge partied and posed with some of her cutest fans during an event, hosted by Chasing Fireflies, to introduce her Harajuku Lovers children's collection. The adorable party was held on September 24 in West Hollywood, California.

After announcing that she's pregnant with baby number three, Ivanka Trump showed up in a figure-hugging dress to the He Named Me Malala premiere at Ziegfeld Theater on September 24 in New York City. We can't spot a bump, but can you?

The model was a vision in white at the VIP sneak peek of the go90 Social Entertainment Platform at the Wallis Annenberg Center for the Performing Arts in Los Angeles on Sept. 24.

The Fifty Shades of Grey star looked glamorous outside the Gucci show at Milan Fashion Week on Sept. 23.

Hair in the air! Selena looks gorgeous in a trench tank while leaving a London office building on Wednesday, where the 23-year-old singer caught a bit of wind!

The Pretty Little Liars star is, well, pretty in a burgundy jumpsuit while sipping Stella Artois and sailing in NYC on Sept. 21.

Pope Francis made his first visit to the United States, and couldn't stop smiling as he joined First Lady Michelle Obama and President Barack Obama (not pictured) in an arrival ceremony at the White House on Sept. 23 in Washington, DC.

All eyes were on Sienna Miller when she stepped out in a stunning Victoria Beckham dress and Pierre Hardy shoes for the High-Rise photo call during the 2015 San Sebastian Film Festival Sept. 22 in San Sebastian, Spain.

Actress Jessica Chastain managed to look both sexy and sophisticated when she arrived to the Metropolitan Opera 2015-2016 season opening night of Otello at The Metropolitan Opera House on Sept. 21 in New York City.

The Scream Queens star puckered up to her "co-star" Red Devil at the show's premiere on Sept. 21.

Lenny Kravitz hit the stage in style during the 2016 Volkswagon Passat Unveiling at the Duggal Greenhouse on Sept. 21 in New York City. His daughter, Zoe Kravitz, was in the audience.

The Sicario actress dazzled at the film's U.K. premiere at Empire Leicester Square in London on Sept. 21.

Selena Gomez stepped out in a sophisticated yet sexy style for the Louis Vuitton Series 3 VIP Launch on September 20 in London, England.

She's 46?! Jennifer Lopez flashed her famous curves at the 2015 iHeartRadio Music Festival at MGM Grand Garden Arena on September 19 in Las Vegas, Nevada.

The "Cool For the Summer" singer -- clad in a fishnet unitard, black bikini top, white leather jacket and high-waisted acid-wash shorts -- heated up The Daytime Village State during the 2015 iHeartRadio Music Festival in Las Vegas on Sept. 19, 2015.

The 19-year-old model knows how to stand out from a crowd! Jenner is the face of Estee Lauder's perfume, Modern Muse, and she helped laud the fragrance in New York City on Sept. 19, 2015, when she turned heads in red at the launch event at Macy's Herald Square.

Leaving behind her angsty Twilight roots, the 25-year-old actress channels Old Hollywood on the New York City set of Woody Allen's latest project.

Kendall Jenner showed her serious model side when she posed and walked the runway at the Marc Jacobs Spring 2016 fashion show during New York Fashion Week at Ziegfeld Theater on September 17.

The GRAMMY-nominated singer performed at his exclusive birthday bash at New York hot spot 1Oak, where he was presented with a giant cake. Derulo officially turns 26 on Sept. 21.

Abdul and Grande teamed up to present an award at VH1's Streamy Awards on Sept. 17.

The mother-of-two is positively glowing as she shows off voluminous braid at the London premiere of Miss You Already on Sept. 17.

The Duchess of Cambridge shows off her new bangin' 'do on a visit to the Anna Freud Centre, a charity that aims to help children's and young people's mental health care.

Orange Is the New Black star Jackie Cruz performed for an exclusive rooftop party at DL in New York City on Sept. 16. The party was hosted by Vivala, the online destination for a new generation of bold, savvy Latinas, and Cruz was also able to premiere the teaser for her new Vivala web series, #SoloJackie.

DJ Questlove of The Roots got the party started during the Martell Cognac 300th Anniversary Celebration at New York City's One World Trade Center on September 16.

While Amy Schumer seemed like a unusual opening act for Madonna, the comedian fit right in on the Rebel Heart tour stage at New York City's Madison Square Garden on September 16.

The designer bonded with two of Hollywood's leading ladies backstage at his Spring 2016 Runway Show during New York Fashion Week on Sept. 16, 2015.

Hollywood power couple Amber Heard and Johnny Depp stepped out smiling and suited up for a special screening of Depp's film Black Mass at the Coolidge Corner Theatre on September 15 in Boston, Massachusetts.

Kylie Jenner's guy Tyga showed up solo on the front row of the Jeremy Scott with Kagome Greens show at Skylight at Moynihan Station on September 14 in New York City. The rapper was seated next to Rob Kardashian's ex-girlfriend, Rita Ora.

The stars were out at Zac Posen’s Spring 2016 show at New York Fashion Week. The designer posed with Mad Men star Christina Hendricks, Amy Schumer, Jennifer Hudson and Bella Thorne backstage on Sept. 14.

The Orange Is the New Black actress dazzled at the Desigual Spring 2016 fashion show in New York, wearing a Desigual creation of her own.

Are Kristen Stewart's brooding days behind her? The Twilight leading lady stepped out smiling (gasp!) in her Chanel gown for the Equals premiere during the 2015 Toronto International Film Festival on September 13 in Toronto, Canada.

The Project Runway host showed a little leg in an intricate lace-and-floral dress at the 2015 Creative Arts Emmy Awards in Los Angeles on Sept. 12, 2015.

The Magic Mike XXL star put his game face on to host the grand opening of LAVO Casino Club at The Palazzo in Las Vegas on Sept. 12, 2015. Manganiello had dinner at the resort's Italian restaurant before trying his hand at craps and blackjack and was later joined by rapper Busta Rhymes.

The newly single singer rocked out at Riot Fest Chicago 2015, where she led her band, No Doubt, in an energetic set in the Windy City's Douglas Park on Sept. 11, 2015.

The smoldering co-stars showed off their A-list power during a press conference in Canada on Sept. 11, 2015. They were up north to support their movie, Demolition, which opened the Toronto International Film Festival.

Natalie Portman certainly turned heads when she showed up in a stunning Lanvin gown for the premiere of A Tale Of Love And Darkness during the 2015 Toronto International Film Festival on September 10 in Toronto, Canada. Portman paired her formal outfit with Bally shoes and Tiffany & Co. earrings.

The "FourFiveSeconds" singer wore a super-low cut white dress and striking cyan colored lipstick to a party she threw at the New York Edition Hotel during Fashion Week in New York City on Sept. 10, 2015.

The 20-year-old fashion model looked striking in a shimmering, metallic red and black sleeveless dress at The Daily Front Row’s Third Annual Fashion Awards, held at the Park Hyatt Hotel in New York City on Sept. 10, 2015.

The "Cool For the Summer" singer put a modern spin on an '80s outfit when she showed up at the Kiss FM Studios on Sept. 10 in London.

The 41-year-old Oscar winner stunned in a form-hugging, black off-the-shoulder gown which she wore on the red carpet at the premiere of her new film Ma Ma at the Capitol Cinema in Madrid, Spain on Sept. 9, 2015.

The 35-year-old singer and fashion designer took the Big Apple by storm on Sept. 8, running errands in a revealing black dress. The same day, Jessica appeared on The Tonight Show Starring Jimmy Fallon, rocking a black jumpsuit.

Donning a sexy, cleavage-baring black gown, Katy Perry appeared to be having a great time during her hand print ceremony at TCL Chinese Theatre IMAX Forecourt on September 8 in Hollywood, California.

The singer looked svelte and dapper on the red carpet at the GQ Men of the Year Awards, where he was named solo artist of the year, in London, England on Sept. 8.

Former Glee and Spring Awakening co-stars, Lea Michele and Jonathan Groff, packed on the PDA at the Diamond Horseshoe/The Paramount Hotel Bar and Grill on September 7 in New York City. Michele saw Groff's hit musical Hamilton on Broadway.

The "Look At Me Now" rapper welcomed the "Thinking Out Loud" singer as a special guest while performing at Drai's Beach Club in Las Vegas on Sept. 6, 2015.

The action icon smiled and waved to his adoring public at a fan screening of his new film Mission: Impossible – Rogue Nation at UME International Cineplex in Beijing, China on Sept. 7, 2015.

The Points Guy, Brian Kelly, joined DJ Mia Moretti and violinist Margot of The Dolls at the lovely Housing Works' Labor of Love event, sponsored by Double Cross Vodka, on September 5 in East Hampton, New York.

"Our mission is incredible, helping the most underrepresented of populations," Kelly, a Housing Works board member, told ET at the soiree. "We serve the population that's just down on their luck. There's not a lot of places they can turn to. ...We're not just thrift shops."

The former Fashion Police co-host was all smiles as she went on a shopping spree in Malibu, California, on Sept. 6, 2015.

The 29-year-old actor has rocked a ton of interesting styles over the years, but the latest might be his boldest: He's bald! LaBeouf showed off his new 'do in Italy during the Man Down premiere at the Venice Film Festival on Sept. 6, 2015.

The 25-year-old actress looked happy to be in Italy, where she was spotted grinning during a photocall for Equals during the 72nd Venice Film Festival at Palazzo del Casino on Sept. 5, 2015.

The couple turned heads as they walked the carpet hand-in-hand at the Black Mass premiere during the Venice Film Festival on Sept. 4.

Gwyneth Paltrow showed up in style for a press conference during the Liverpool Fashion Fest Autumn/Winter 201 at Televisa San Angel on September 3 in Mexico City, Mexico.

The Sleeping With Other People co-stars were all smiles at a preview screening of their new film, followed by a cast Q&A, at the 92nd Street Y in New York City on Sept. 3, 2015.

The actors and rappers hung out at the 10th annual LudaDay Weekend celebration, which kicked off Sept. 3, 2015, at Clark Atlanta University. The two were at a celebrity bowling event at Bowlmor Lanes in Atlanta, Georgia. Proceeds raised by the event go to The Ludacris Foundation, which aims to spread the funds back out into the community.

The 19-year-old model and reality TV star stepped out in New York City on September 3, wearing an off-the-shoulder top and high-waist jeans. With New York Fashion Week just around the corner, Jenner has been seen roaming the Big Apple with friend and fellow model Hailey Baldwin, 18.

"Black Widow" singer Rita Ora wore a bizarre tuxedo-skirt-wallet chain combo for her appearance at Kiss FM Studios on September 3 in London, England.

Minka, Jenna and Vanessa smiled together at The A List 15th Anniversary Party in Beverly Hills, California on Sept. 1, 2015.

The Before We Go co-stars looked insanely stylish as they smiled and posed together on the red carpet outside the premiere of their new film at the Arclight Theatre in Hollywood on Sept. 2, 2015.

Time to go shopping! Khloe stepped out in West Hollywood, California on Wednesday in this curve-hugging, all-white outfit.

The Everest actor made the trek to the 72nd Venice Film Festival for the film's premiere on September 2.

Luke Bryan and his pal Miranda Lambert posed backstage during the 9th Annual ACM Honors at the Ryman Auditorium on September 1 in Nashville, Tennessee. Bryan was the recipient of the Gene Weed Special Achievement Award.

Living it up in the city! The 17-year-old actress showed off her stomach on Tuesday while out and about in NYC.

The comeback begins! Janet Jackson couldn't stop smiling on the opening night of her Unbreakable Tour at Rogers Arena in Vancouver, British Columbia on Aug. 31.

The "Cool for the Summer" singer snapped selfies with fans outside Jimmy Kimmel Live! in Hollywood on Aug. 31.

The reality star enjoyed the ultimate rooftop experience with his girlfriend at SKY Waikiki in Honolulu, Hawaii on Aug. 29.