Taylor Swift
The "Shake It Off" singer knows all that glitters is gold as she works a Romona Keveza skirt.
Gwen Stefani
Gwen's hair is "ON FIRE"!!!
Derek Hough
The Dancing With the Stars pro scores big backstage with Girl Scout cookies!
Brandi Glanville
The Real Housewives of Beverly Hills star rocks animal print at the KIIS-FM Jingle Ball.
Meghan Trainor
Before performing "All About That Bass" in front of a sold-out crowd, the blond singer picks up some goods at the gifting suite.
Christian Serratos
The actress, who plays fiesty Rosita on The Walking Dead, looks sexy in black.
Iggy Azalea
The "Fancy" rapper shows off some pretty fancy footwear.
Meghan Trainor
We are all about that top, 'bout that top...
Derek Hough
Always good to see the Dancing With the Stars hottie!
Becky G
The "Shower" singer picks out some accessories from DressFierce before showtime.
Todd Chrisley & Savannah Chrisley
The Chrisley Knows Best star brought his 16-year-old daughter to the KIIS-FM Jingle Ball.
Taylor Swift
The singer peformed her latest hit single, "Blank Space," as well as her 2012 hit "We Are Never Getting Back Together."
Demi Lovato
Before surprising fans with a duet performance of "Avalanche" with Nick Jonas, the singer supports her new skincare line, Devonne by Demi.
Jessie J
The British singer shows her L.A. spirit!
Ariana Grande
The pop star gets playful on stage.
Ariana Grande & Big Sean
The lovebirds sing their duet, "Best Mistake."
Nick Jonas & Demi Lovato
The two performed their duet, "Avalanche."
Gwen Stefani & Pharrell Williams
The two The Voice coaches performed together onstage.
Iggy Azalea & Rita Ora
The two performed their hit single, "Black Widow."