Willow Smith was white-hot for winter at KIIS FM’s Jingle Ball 2011 at Nokia Theatre L.A. LIVE on Saturday (Dec. 3). The 11-year-old singer, who will premiere the video for her Nicki Minaj-assisted single “Fireball” on Wednesday, showed off her one-of-a-kind style at the annual holiday concert, which featured performances from Lady Gaga, Flo Rida, Sean Paul, David Guetta, Gym Class Heroes, and more. Nick Cannon got into the Christmas spirit with a red Santa’s hat and YouTube sensation Karmin hammed it up for the cameras.