Selena Gomez attended the premiere of her new film Behaving Badly at the ArcLight Hollywood on Tuesday evening, and the 22-year-old starlet definitely dressed the part in a back-baring cropped top!

Behaving Badly, which we had never heard of until now, is about a teenager named Rick Stevens who has a crush on Nina Pennington (played by Gomez), who has a boyfriend. Still, they form a friendship and "embark on a rock n roll journey together," so Rick has to get some sort of a happy ending, right? Guess we'll have to find a spoiler online watch the movie...

In other news, The Daily Star reports that when he's not getting into fights with Orlando Bloom, Justin Bieber has been calling model Cara Delevingne trying to get the scoop on the model's new friendship with Selena! A source tells the tabloid, "Justin has called Cara on more than one occasion, wanting to know whats going on. Its been clear that hes had a drink beforehand, too ... Cara is unfazed by the situation though. Shes just having fun with a new pal."