Now I Know Exactly What You’re All About

Selena Gomez performed her single, “Love You Like a Love Song” on the Tonight Show With Jay Leno last night, September 19, at the NBC Studios in Burbank, California.

Selena also met Simon Cowell, who was on the show to promote his new endeavor The X Factor.

She looks so pretty! Sel was apparently picked up from the show by her boyfriend, Justin Bieber.

Source: WireImage