Selena Gomez: Backstage at Z100 Jingle Ball 2013

Selena Gomez is all smiles backstage during the 2013 Z100 Jingle Ball held at Madison Square Garden on Friday night (December 13) in New York City.

The 21-year-old actress/singer will be hitting the stage later tonight along with Austin Mahone, Miley Cyrus, and Ariana Grande.

PHOTOS: Check out the latest pics of Selena Gomez

“It was perfect casting. That kid can act,” William H. Macy recently shared about casting Selena in his film, Rudderless. “She’s the real deal. I was very impressed. She’s a very talented young woman. Selena‘s in three scenes so she’s in and out very quickly.”

10+ pics inside…