Selena Gomez Wows At 'Concert For Hope' (PHOTOS)

Selena Gomez looked stunning when she performed Sunday night at the Concert for Hope to raise money for cancer research.

"So excited!!!!! performing Who Says for the first time tonight at the Concert for Hope," she tweeted beforehand.

Selena's man Justin Bieber was not in the audience, as he was in Germany over the weekend to shoot an appearance on the television show "Wetten Dass...?"