Katie Holmes and Suri Cruise
The two appear together onstage at the Z100 Jingle Ball to introduce Taylor Swift.
Taylor Swift
The singer performs at the Z100 Jingle Ball.
Katie Holmes and Suri Cruise
The two appear together backstage at the Z100 Jingle Ball.
Demi Lovato
The singer performs at the Z100 Jingle Ball.
Taylor Swift
The singer showcases her new moves with her backup dancers.
Taylor Swift and Ed Sheeran
The singers perform her new song "End Game."
Demi Lovato
The singer glitters in gold.
Kesha and Macklemore
The two perform their song "Good Old Days."
Liam Payne and Niall Horan
The two have a mini One Direction reunion.
Tom Sandoval & Ariana Madix
Before the show begins, the Vanderpump Rules stars snap a few romantic selfies with their Fujifilm Instax cameras at the Jingle Ball gift lounge.
Liam Payne
The singer admires his Christmas ornament.
Ed Sheeran
The singer performs onstage.
Nicole Richie
The fashion designer walks the red carpet.
Sofia Carson
It's not Jingle Ball without a visit from Santa at the 102.7 KIISFM Jingle Ball 2017 Gift Lounge.
Lance Bass
The singer appears on the red carpet.
Lauren Jauregui
The Fifth Harmony singer walks the red carpet.
Sarah Hyland
The Modern Family star sizzles in a red gown.
Bellamy Young
Peace, love and Jingle Ball. The Scandal star gets into a relaxing zone backstage with help from the co-founders of ENERGY Muse.
Kesha
The singer walks the red carpet.
Ed Sheeran & James Corden
Best buds! The fellow Brits pose backstage at KIIS FM's Jingle Ball in the City of Angels.
Ryan Seacrest
The television personality checks Kris Kringle's naughty or nice list.
Charlie Puth
Two words: Too cute!
Halsey
The pop star may be "Bad at Love" but she sure knows how to rock a photo opp.
Ed Sheeran
The "Perfect" singer prepares for his headlining performance at KIIS FM's Jingle Ball show.