Must-See Star Sightings: December 1-15, 2018

The "I Like It" rapper was red hot onstage during her Rolling Loud set in Los Angeles on Dec. 15 -- and that was before her ex, Offset, stormed the stage to try to win her back!

The rock icon took his final curtain call for Springsteen on Broadway at the Walter Kerr Theatre in New York City on Dec. 15.

The "Peter Pan" singer surprised the audience during The Chainsmokers' residency performance at XS Nightclub at Wynn Las Vegas on Dec. 15, performing her hit song, "This Feeling," with the duo.

The couple was joined by newlyweds Miguel and Nazanin Mandi at the Formula E Race in Saudi Arabia on Dec. 15.

The First Man star gave a wave as he stepped out in New York City on Dec. 14.

The 22-year-old actress glowed onstage during a press conference in Beijing, China, on Dec. 14 for her new action film, Bumblebee.

Lucky lady! Dewan skated around with Cinderella and Prince Charming at the Disney on Ice Presents Dare to Dream Celebrity Skating Party at Los Angeles' Staples Center on Dec. 14.

The Second Act co-stars shared a sweet moment while taping a segment for Despierta America at Univision Studios in Miami, Florida, on Dec. 14.

Read all about it! The "Girls" singer rocked a nearly see-through dress with a newspaper print all over it to BBC Studios in London, England, on Dec. 14. She finished off her look with a black beret, long plaid coat and mid-calf combat boots.

The Pretty Little Liars alum sipped on a juice drink while out with friends in Los Angeles in Dec. 14.

The former Miss Universe donned a textured all-black party ensemble while celebrating the launch of her digital cover for Flaunt Magazine's the Transcience Issue at Avenue Los Angeles on Dec. 14.

The second-time new mama rocked a festive forest green sweater to run errands in Los Angeles on Dec. 13.

What a score! The Jane the Virgin star was surprised with a Los Angeles Clippers jersey while hosting a Breaking the Glass Ceiling event with Ford in L.A. on Dec. 13.

Time for snacks! The actor munched on some popcorn during a screening and Q&A session for his new movie, Welcome to Marwen, in Atlanta, Georgia, on Dec. 13.

Working 9 to 5! Looking ready to get down to business, the Vox Lux star gave a wave during a press day in New York City on Dec. 13.

The On the Basis of Sex actor made an even taller new buddy (hello, Oscar!) during the Academy of Motion Pictures Arts and Sciences' official Academy screening of his new film with Justin Theroux and Felicity Jones at NYC's Museum of Modern Art on Dec. 13.

Top of the morning to you! The British actress donned a prim yellow Chanel look from head to toe as she was awarded Officer of the Most Excellent Order of the British Empire by Prince Charles at Buckingham Palace in London, England, on Dec. 13.

Pop the champagne! The 32-year-old actress celebrated the 76th Golden Globe Awards Show menu unveiling in Los Angeles on Dec. 13 with bottles of Moet & Chandon Imperial.

SJP was back in black at the 39th Annual Muse Awards in New York City on Dec. 13.

The gorgeous couple looked as stunning as ever at the world premiere of Lopez's new movie, Second Act, in New York City on Dec. 12.

Momoa was flanked by his lovely co-stars on the red carpet at the Aquaman premiere in Hollywood on Dec. 12.

The heartthrob actors shared a laugh while at the reception for a special screening of A Quiet Place, which Pratt hosted, at The London West Hollywood on Dec. 12.

The real-life couple shared a hilarious moment during a PaleyLive presents event for their Fox show, Gotham, in New York City on Dec. 12.

The happy hippie went retro during her New York City trip on Dec. 12.

The actors supported Schumer at the launch of her Le Cloud apparel line in New York City on Dec. 12.

The upbeat actress flashed a big smile while out in Los Angeles on Dec. 12.

The former president was all smiles as he made his way into the 2019 Robert F. Kennedy Human Rights Ripple of Hope Awards in New York City on Dec. 12.

The "Let Me" singer looked sharp in a tweed Tom Ford checkered blazer, black long-sleeved button-up and navy blue slacks as he left his album release party in New York City on Dec. 12.

The 35-year-old actress matched the royal blue carpet at the European premiere of Mary Poppins Returns in London, England, on Dec. 12.

The newlywed was in a good mood when he arrived at the Mumbai Airpot in India en route back to New York on Dec. 12.

The Second Act co-stars snapped a selfie during their SiriusXM Town Hall, which was hosted by Andy Cohen in New York City on Dec. 12.

The "I'm a Mess" singer put her best foot forward at 103.5 KISS FM's Jingle Ball 2018 in Chicago, Illinois, on Dec. 12.

It was a Hills reunion when Patridge hosted the PREY SWIM "Summer in December" fashion show at Absolut Elyx CEO Jonas Tahlin's Los Angeles home on Dec. 12.

The actresses looked like they were having a ball while speaking onstage during the 25th Annual Screen Actors Guild Awards nominations announcements in West Hollywood, California, on Dec. 12.

The California native had her headphones ready to go -- and a Louis Vuitton bag practically bigger than she is! -- when she got to the Charles de Gaulle airport in Paris, France, on Dec. 12.

The "God Is a Woman" singer showed off another one of her giant puffy jackets -- this one was a yellow graffiti coat by Adaptation -- while heading into a recording studio in New York City on Dec. 11.

The Aquaman queen gave a wave before heading into the Los Angeles set of Jimmy Kimmel Live on Dec. 11.

The lovebirds shared a sweet moment on the red carpet at the 6th Annual Winter Wonderland Toys for Tots Party in Los Angeles on Dec. 11.

The Duchess of Cambridge let out a huge laugh while doing arts and crafts during a visit to Evelina London Children's Hospital with husband Prince William (not pictured) on Dec. 11.

The Bumblebee star had his dukes up while sitting with Barinholtz during the Sports Illustrated 2018 Sportsperson of the Year awards show in Los Angeles on Dec. 11. Cena received the SI Muhammad Ali Legacy Award during the ceremony, which will air on NBCSN at 9 p.m. ET/PT on Dec. 13.

The model went on a coffee run in New York City's SoHo neighborhood on Dec. 11.

Justice reigns supreme! Jones got to hang out with the Supreme Court Justice, whom she portrays in On the Basis of Sex, at the film's premiere in Washington, D.C., on Dec. 11.

The Ashlee + Evan star got her shopping on at Sandro in Beverly Hills on Dec.11.

Orange you glad to see Gigi? The 23-year-old model brightened up everyone's day when she hit the streets of New York City on Dec. 11 in a head-to-toe, tangerine-hued ensemble.

Lady in red! The momager looked very festive at the Tamara Mellon Palisades Village opening party at Blue Ribbon Sushi in Pacific Palisades, California, on Dec. 11.

Divalicious! J.Lo made a regal entrance onto the New York City set of Watch What Happens Live With Andy Cohen on Dec. 11.

The affable actor happily hit the stage at the Japanese premiere of A Star Is Born in Tokyo on Dec. 11.

Peace be with you! The This Is Us star greeted the audience during his Late Night With Seth Meyers appearance on Dec. 10.

Supercallifragilisticexpialidocious! The co-stars looked lovely at the Paris premiere of Mary Poppins Returns on Dec. 10.

Clad in a plaid, festive holiday blazer, the "No Excuses" singer belted out her hits during Hot 99.5's Jingle Ball 2018 concert in Washington, D.C., on Dec. 10.

Mellow yellow! The newlywed had a sunny disposition during her New York City photo shoot on Dec. 10.

Talk about a model family! The duo shared a sweet mother-daughter moment on the red carpet at the 2018 Fashion Awards, held in partnership with Swarovski at Royal Albert Hall in London, England, on Dec. 10.

The Fresh Off the Boat actress played with patterns with a fun black-and-white ensemble at a Paley Center event for her ABC sitcom in Beverly Hills on Dec. 10.

The co-stars looked absolutely regal at the European premiere of their period piece, Mary Queen of Scots, at Cineworld Leicester Square in London, England, on Dec. 10.

The lovely ladies suited up at the Rachel Zoe Boutique in Los Angeles' Pacific Palisades neighborhood on Dec. 10. Zoe and Irena Medavoy (not pictured) were hosting an in-store shopping event that benefited YourMomCares, a charity co-founded by Prinsloo's mother-in-law -- Adam Levine's mom, Patsy Noah -- and Jonah Hill and Beanie Feldstein's mom, Sharon Feldstein.

The "I Like That" singer leaned in hard to her signature black-and-white look at the Welcome to Marwen premiere in Hollywood on Dec. 10.

The music producer celebrated his birthday at a star-studded bash at the Pérez Art Museum in Miami, Florida, on Dec. 9, where a slew of big-name artists and celebs -- including the Oscar-winning Jerry Maguire actor -- turned out to enjoy the massive party presented by CÎROC Black Raspberry.

The 21-year-old actress celebrated her birthday a little early when she was presented with a very on-theme cake at the premiere of her new movie, Bumblebee, in Hollywood on Dec. 9.

The Queen of Christmas looked the part while performing on the Nottingham, England, leg of her "All I Want For Christmas Is You" Tour on Dec. 9.

The stunning co-stars both stepped out in mini dresses at a photocall for their new comedy, Second Act, at the Four Seasons Hotel in Beverly Hills on Dec. 9.

The Holiday Calendar star posed for a pic during her vacation in Israel on Dec. 9.

The BFFs giddily embraced at the 12th annual CNN Heroes: An All-Star Tribute event at the American Museum of Natural History in New York City on Dec. 9. The pair hosted the ceremony, which celebrated individuals who made extraordinary contributions to help improve the lives of others.

Just a few days after their own wedding, the newlyweds were spotted at Udaipur Airport on Dec. 8 to attend the nuptials of businessman Mukesh Ambani's daughter.

The Oscar winner donned red track pants, a massive, full-length white fur coat and dark shades while performing with his band, Thirty Seconds to Mars, during KROQ Almost Acoustic Christmas at The Forum in Inglewood, California, on Dec. 8.

The cheeky singer proved that literally "nothing breaks like a heart," wearing the embodiment of her new song on a bold bustier, which she paired with green python leather pants, a colorful jacket and metallic peep-toe heels at the Borderline Club in London, England, on Dec. 7.

The hotel heiress hosted her annual Art Basel party at WALL in Miami, Florida, on Dec. 8, playing a two-hour set as her sister, Nicky Hilton Rothschild, and actor Simon Rex cheered her on.

The "Girls" singer looked like a gift herself as she stepped out in a gorgeous Moschino ensemble at the Capital FM Jingle Bell Ball in London on Dec. 8. 

Girl power! The performers met up backstage at Z100's Jingle Ball 2018 concert at NYC's Madison Square Garden on Dec. 7.

The "Nothing Breaks Like a Heart" singer was adorably sassy while visiting KISS FM in London, England, on Dec. 7.

Cox supported her former Friends co-star and BFF at an after-party for the premiere of Aniston's new movie, Dumplin', at Sunset Tower in Los Angeles on Dec. 6.

The powerful trio bonded at the Billboard Women in Music 2018 event in New York City on Dec. 6.

Could those pink rain boots be any more perfect? The "Misery" singer was all layered up to protect herself from the wet Los Angeles streets following her appearance on Jimmy Kimmel Live on Dec. 6.

With a cherry on top! Rainbow cupcake in hand, the "Havana" singer had one sweet day filming a commercial in New York City on Nov. 6.

The Predator actress took a cue from Ariana Grande's signature look, pairing an embroidered turtleneck sweater with red thigh-high boots for a night out in Los Angeles on Dec. 6. Munn even matched her lip hue and clutch to the bold footwear.

The Bumblebee star looked magical in metallics while out in London, England, on Dec. 6.

The Riverdale co-stars looked bold and bright at the 2018 GQ Men of the Year Party in Beverly Hills on Dec. 6.

Bring your mother to work day! Jenner didn't just support her daughter by showing up to Kardashian's KKW Beauty pop-up at their hometown ULTA Beauty in Calabasas, California, on Dec. 6 -- the duo also matched in pink attire!

Vroom vroom! Clad in a racecar-inspired Vetements X Alpha jacket, black pants and moto boots, the recently married model chatted on the phone while walking to a photo shoot on a rainy Los Angeles day on Dec. 6.

The Domestics star twirled around to show off her mod ensemble as she left the SiriusXM Studios in New York City on Dec. 6.

The actors and actresses woke up bright and early on Dec. 6 to announce the nominees for the 76th Annual Golden Globe Awards in Beverly Hills. The foursome celebrated the nominations by toasting with glasses of Moët & Chandon, the official champagne of the Golden Globes.

Jaws dropped when the blonde bombshell hit the red carpet for the 2019 Pirelli Calendar launch gala in Milan, Italy, on Dec. 5.

The Friends alum gave a wave as she made her way onto the Jimmy Kimmel Live set in Los Angeles on Dec. 5.

Keeping warm in a giant light blue puffy jacket and knee-high suede heeled boots, the "thank u, next" singer hung out with her friend, Aaron, in New York City on Dec. 5.

Round of applause! Kiyoko showed Swift her appreciation while the two performed together at the 2018 Ally Coalition Talent Show in New York City on Dec. 5.

The Vox Lux co-stars hung out at the after-party following the Los Angeles premiere of their new movie at ArcLight Hollywood on Dec. 5.

The actresses shared a laugh at the L'Oréal Paris Women of Worth Celebration 2018 at the Pierre Hotel in New York City on Dec. 5.

The smiling couple held hands as they made their way into the 23rd Annual United Nations Correspondents Association Awards in New York City on Dec. 5.

While visiting the Akrotiri Royal Air Force base in Cyprus with husband Prince William on Dec. 5, the Duchess of Cambridge looked as excited to meet young royal fans as they were to meet her!

The R&B crooner put the audience at The Tonight Show Starring Jimmy Fallon in a festive mood during his stellar performance on Dec. 5.

Back home Down Under, the Boy Erased star looked fabulous in a floral Valentino maxi dress at the 2018 AACTA Awards, presented by Foxtel, in Sydney, Australia, on Dec. 5.

The powerhouse actresses came together for the Hollywood Reporter's 27th Annual Women in Entertainment Breakfast in Los Angeles on Dec. 5.

Back in black! The Everybody Knows star strolled through midtown Manhattan on Dec. 5.

The newlyweds stepped out for their first post-wedding public appearance, the launch party for Bumble India in New Delhi on Dec. 5. Chopra is an investor in the dating app, which already exists stateside.

The Ben Is Back star kept warm and toasty while out in New York City on Dec. 4.

So ethereal! The Australian actress shimmered in a delicately embroidered, sequined Chanel number at the Mary Queen Of Scots premiere in New York City on Dec. 4.

So magical! The mom of three got her glow on next to a collection of faux lit-up crystals at her KKW Beauty Pop-Up at South Coast Plaza in Costa Mesa, California, on Dec. 4.

The lovebirds enjoyed a date night during a special Los Angeles screening of If Beale Street Could Talk on Dec. 4.

Wakanda forever! The Black Panther stars reunited at a 2018 MoMA Contenders screening and Q&A of their Marvel hit at the Hammer Museum in Los Angeles on Dec. 4.

The redheaded beauty was decked out in Chanel for the fashion house's Metiers D'Art 2018/19 show at New York City's Metropolitan Museum of Art on Dec. 4.

The On the Basis of Sex actor struck a brooding pose at the Bristol Palace Hotel in Paris, France, on Dec. 4.

The triple threat was certainly vying for the greatest showman on Earth title while performing on the Today show on Dec. 4.

Going for the gold! A gilded Rexha blew kisses ahead of her performance at the Inaugural TPG Awards Ceremony at the Intrepid Sea-Air-Space Museum in New York City on Dec. 4.

Giddy up! The 24-year-old model got up close and personal with Raul de Nieves' carousel installation, presented by Bvlgari & the Art Production Fund, during Art Basel Miami Beach 2018 on Dec. 4.

Haibon cracked up his fiancee as they checked out an installation during Refinery29 Presents 29Rooms Los Angeles 2018: Expand Your Reality on Dec. 4.

The newly single socialite struck a pose on a swing at The American Meme special screening after-party at the private Los Angeles residence of Absolut Elyx CEO Jonas Tahlin on Dec. 4.

Stripes on stripes on stripes! The British singer wore head-to-toe black-and-white, save for a pair of blue oval sunglasses, while out in Los Angeles on Dec. 4.

The gorgeous couple looked as fashionable as always at the Christmas Haig Club House Party at Laylow in London, England, on Dec. 3, which the retired soccer pro was hosting with Jefferson Hack. Though not pictured, their oldest son, Brooklyn, joined them for the festivities as well.

The 51-year-old actress embraced her co-star, Lucas Hedges, at the premiere of their movie, Ben Is Back, in New York City on Dec. 3.

The in-demand model certainly lived up to the theme at the Marc Jacobs Redux Grunge Collection showing in New York City on Dec. 3. The Marc Jacobs, Sofia Coppola and Katie Grand-hosted event also served as the opening of the Marc Jacobs Madison store.

The Aquaman actress gave a wave behind her while signing autographs for fans in NYC on Dec. 3.

The Chanel-clad actress was beaming as she spoke onstage during the SAG-AFTRA Foundation Conversations for hew new movie, Mary Queen Of Scots, at the Robin Williams Center in New York City on Dec. 3.

The Skate Kitchen star went on quite the shopping spree at the Louis Vuitton store in NYC's SoHo neighborhood on Dec. 3. 

These two know how to strike a pose! Kimye put their power couple moves on display when they arrived at the Versace Pre-Fall 2019 show in New York City on Dec. 2.

The "Sunrise, Sunburn, Sunset" singer kicked up the dust at a special Citi and AAdvantage-presented show at NYC's Hammerstein Ballroom on Dec. 3.

Cowabunga, dude! The Game of Thrones alum was in high spirits during a day of press in New York City with his Aquaman co-stars on Dec. 3.

The supermodel and her musician beau took Kaulitz's dog out for a walk in Los Angeles on Dec. 3.

The 36-year-old actress gave off major Mary Tyler Moore vibes while jauntily filming scenes for her new movie, Modern Love, in New York City on Dec. 3.

So much color! On Dec. 3, the Homecoming star brightened up the streets of New York City in a jacket as bright as her smile.

The actresses hugged it out at Equality Now's Annual Make Equality Reality Gala at the Beverly Hilton Hotel in Beverly Hills on Dec. 3.

The actors had huge grins on their faces during a photo call for their upcoming blockbuster flick, Bumblebee, in Berlin, Germany, on Dec. 3.

The Staples Center regulars gave a big thumbs up to Levine's hometown team as the Los Angeles Lakers took on the Phoenix Suns on Dec. 2, crushing the visitors 120-96.

The "Misery" singer got the crowd pumped up during the One Love Malibu Festival at King Gillette Ranch in Los Angeles on Dec. 2. The fundraiser brought in nearly $1 million for Woolsey Fire recovery.

Queen Bey looked as fierce as usual during one of her many outfit changes while performing with her husband, JAY-Z, during the Global Citizen Festival: Mandela 100 in Johannesburg, South Africa, on Dec. 2.

The former DWTS pro turned the streets of Los Angeles into her very own runway on Dec. 2.

The Suspiria actress wowed in a slinky silver number at the Tribute to Agnes Varda dinner during the 17th Marrakech International Film Festival in Morocco on Dec. 2.

The High School Musical alum's hubby kept a good grip on their dog, Maui, as the trio strolled through a farmer's market in Los Angeles on Dec. 2.

The Schitt's Creek star flashed his signature smirk at the Trevor Project's TrevorLIVE Gala in Beverly Hills on Dec. 2.

The actresses stuck close together at the Amazon Studios Holiday Party in Los Angeles on Dec. 1.

The Vox Lux star looked ethereal in a blush-hued gown as she posed for an otherwise moody portrait inside the Escher x Nendo/Between Two Worlds Exhibition ahead of the NGV Gala 2018 at the National Gallery of Victoria in Melbourne, Australia, on Dec. 1.

They've stolen our hearts! The late-night talk show host struck a post with the Montclair Film's woman of honor during the "An Evening With Stephen Colbert & Meryl Streep" event at NJPAC in Newark, New Jersey, on Dec. 1.

The "New Rules" singer wowed in white at Variety's 2nd Annual Hitmakers Brunch at Sunset Tower in Los Angeles on Dec. 1. 

If you didn't know her name, you sure do now! The Vanderpump Rules star was party-ready in a strapless LBD as she danced the night away at sbe's HYDE Bellagio in Las Vegas on Dec. 1.

The Shark Tank star stopped by the Hennessy X.O Personalization Studio, supported by Clos 19, in New York City's Grand Central Station. John checked out the complimentary engraving and gift wrapping options at the pop-up, which is open through Dec. 12.