Lady Gaga Flies High in Las Vegas, Plus Ryan Seacrest, Jenny McCarthy & More

Lady Gaga soars above the stage in Las Vegas while kicking off her Enigma concert residency at Park Theater at Park MGM on Friday.

On Friday, Jenny McCarthy and Ryan Seacrest get a close-up look at the famous Time's Square ball before they host ABC's star-studded Dick Clark's New Year's Rockin' Eve in New York City.

Trevor Noah embraces his inner kid alongside Frozone and Mr. Incredible at Pixar Pier at Disney California Adventure Park in Anaheim on Friday.

Jamie Chung and Justin Hartley link up at the Mott 32 restaurant opening in Las Vegas on Friday.

Adam Lambert and Katy Perry show support for Lady Gaga backstage at her debut Enigma show at the Park Theater in Las Vegas on Friday.

Joe Jonas and fiancée Sophie Turner hold hands as they leave a double date with newlyweds Nick Jonas and Priyanka Chopra at Sketch in London on Friday.

Rita Ora looks classic in a black dress and red lipstick while performing on the Graham Norton Show in London on Friday.

Lin-Manuel Miranda is all smiles as he arrives at the airport in Isla Verde, Puerto Rico, where he announced new dates for Hamilton performances on the island.

Venus and Serena Williams hug it out after Venus wins their match at the opening day of the Mubadala World Tennis Championship in Abu Dhabi on Thursday.

Friday in West Hollywood, Kaia Gerber looks chic in jeans and a blazer as she leaves Peppermint club after Dave Chappelle and John Mayer's performances.

Johnny Depp dresses up as his iconic Pirates of the Caribbean character Jack Sparrow while meeting with children during his visit to the Curie Institute in Paris on Thursday.

Mariah Carey, Carly Steel and Rebel Wilson snap a sweet selfie while out to dinner at Caribou Club in Aspen on Thursday.

Iggy Azalea performs on Thursday after one of her backup dancers suffered a seizure onstage in Rio de Janeiro, Brazil.

Gucci Mane and Offset perform at the Gucci Mane and Friends Holiday Show at Fox Theater on Thursday in Atlanta.

Kristen Stewart and rumored girlfriend Sara Dinkin continue their streak of public appearances this week, grabbing lunch together in Los Angeles on Thursday.

Mark Wahlberg and wife Rhea Durham hold hands on a walk in Barbados on Thursday.

Lisa Rinna and daughter Amelia Gray Hamlin twin in all-black ensembles on Thursday in L.A.

Angelina Jolie joins the BBC Radio 4 Today programme as the Christmas guest editor on Friday.

Selena Gomez wears a hoodie from BFF Taylor Swift’s Reputation tour while out and about in Los Angeles on Wednesday.

Vanessa Hudgens and boyfriend Austin Butler go for a stroll in L.A. on Wednesday.

Sandra Lee celebrates the holidays with her family in Strasbourg.

Justin Theroux takes his dog for a walk in N.Y.C.’s SoHo neighborhood on Wednesday.

Wednesday in N.Y.C., Naomi Watts and boyfriend Billy Crudup hail a cab after seeing American Son on Broadway.

Adam DeVine and girlfriend Chloe Bridges pose together as the Los Angeles Clippers take on the Sacramento Kings at Staples Center on Wednesday in Los Angeles.

Wednesday in New York City, Katie Holmes looks giddy as she glances at her phone while grabbing her morning coffee.

Alessandra Ambrósio plays a game of beach tennis on Wednesday in Brazil.

Mark Wahlberg takes a dip after arriving at a hotel in Barbados with his family on Wednesday.

Mariah Carey and boyfriend Bryan Tanaka are feeling the holiday cheer while doing some last minute Christmas shopping in Aspen on Monday.

Kate Middleton and Meghan Markle smile together at the Christmas Day Church service on the Sandringham estate on Tuesday in King's Lynn, England.

Jake Gyllenhaal is seen carrying unwrapped boxes and bags in N.Y.C. on Monday.

Emma Roberts steps out in a baseball hat and sunglasses to finish up some last-minute Christmas shopping in Los Angeles on Monday.

Adam Sandler catches a Milwaukee Bucks vs. New York Knicks game with wife Jackie and their daughters Sadie and Sunny at N.Y.C.'s Madison Square Garden on Tuesday.

Newlyweds Nick Jonas and Priyanka Chopra hold hands as they leave 34 Mayfair restaurant in London after dinner with Joe Jonas and Sophie Turner on Christmas Eve.

Wyatt Russell holds hands wth girlfriend Meredith Hagner as the two do some Christmas shopping in Aspen on Monday.

Another day, another outing for Selena Gomez, who visits a friend in L.A. on Sunday.

Before hitting the epic Kardashian Christmas party, Jennifer Lopez and Alex Rodriguez do some holiday shopping at The Grove shopping center in L.A. on Monday.

Kristen Stewart and stylist Sara Dinkin continue their week of outings in Los Angeles on Monday.

Newlyweds Nick Jonas and Priyanka Chopra do some very last-minute shopping in London on Monday, Christmas Eve.

Molly Sims, her husband Scott Stuber and their kids Brooks and Scarlett snag front-row seats for the Memphis Grizzlies vs. Los Angeles Lakers basketball game at Staples Center in L.A. on Sunday.

Ellen Page and wife Emma Portner sit back and relax during the Philadelphia Flyers vs. New York Rangers hockey game in N.Y.C. on Sunday.

Paris Hilton and sister Nicky Hilton Rothschild show off a sweet pooch at a Christmas pet adoption event for Paris's Nail & Bone company in Pacific Palisades, California, on Sunday.

Zayn Malik keeps it low-key for a New York City outing on Sunday.

Goldie Hawn bundles up on Sunday for her family's annual Christmas trip to Aspen, Colorado.

Lori Loughlin grabs a few last-minute finds during a Sunday shopping trip in L.A.

Mariah Carey holds hands with boyfriend Bryan Tanaka during her annual Christmas celebration in Aspen, Colorado, on Saturday.

Adam Levine and Behati Prinsloo take a selfie with a pal during the Los Angeles Lakers vs. New Orleans Pelicans basketball game at L.A.'s Staples Center on Friday.

Luann de Lesseps sits atop a sparkly sleigh fit for a countess during her holiday cabaret show at The Paramount in Huntington, New York, on Friday.

Selana Gomez hikes in Los Angeles on Saturday.

Laverne Cox glows at Catch in West Hollywood on Sunday.

Kylie Jenner rocks a festive look for the season in Los Angeles on Saturday.

Angela Bassett — who famously played Tina Turner in the 1993 film What's Love Got to Do with It — links up with Tina: The Tina Turner Musical star Adrienne Warren backstage at London's Aldwych Theatre on Friday.

Maria Menounos and husband Keven Undergaro hold hands in L.A. on Friday.

Amid her reunion with Offset, Cardi B performs at the Electric Holiday Concert at the Puerto Rico Convention Center in San Juan on Friday.

Luke Wilson flashes a grin while out and about in L.A. on Friday.

Milo Ventimiglia visits deployed service members in Vaernes, Norway, on Friday as part of a USO trip with stars including Wilmer Valderrama, Shaun White and Kellie Pickler.

Also giving back: Lisa Rinna, who joins husband Harry Hamlin (not pictured) to serve meals at Los Angeles Mission on Wednesday.

Johnny Depp, guitar in hand, arrives in Paris on Friday after taking the train from London.

Cara Delevingne and Ashley Benson stay connected on Friday while arriving to London's Gatwick Airport.

Amanda Bynes keeps her eye on her phone during an outing in Los Angeles on Friday.

Katharine McPhee carries her pet Chihuahua after grabbing lunch with fiancé David Foster in Beverly Hills on Thursday.

Newlyweds Priyanka Chopra and Nick Jonas smile together at their latest wedding reception in Mumbai on Thursday.

Ellie Goulding performs a charity concert at the SSE Arena Wembley in London on Thursday.

Mark Ronson, Mikey Cyrus and host Jimmy Fallon sip some eggnog after Miley sings a feminist version of “Santa Baby” on Thursday’s episode of The Tonight Show in N.Y.C.

Lyrica Okano stops by Build Studios to discuss Marvel’s Runaways on Thursday in N.Y.C.

Thursday in N.Y.C., Steve Carell stops by the 92nd Street Y to discuss Welcome to Marwen after the film’s screening.

Jennifer Lawrence looks chic in a yellow Burberry teddy coat as she heads to a salon in N.Y.C. on Wednesday.

Kate del Castillo holds up a shot glass at a press conference at Club 51 in Mexico City on Thursday.