Kelly Osbourne: But First, Let Me Take A #Belfie

By Jennifer Lynn

Kelly Osbourne has given us serious bum envy by posting a belfie on Instagram over the weekend – and girlfriend has clearly been doing her squats.

Dropping her jeans to reveal a pink thong and rock hard butt cheeks, Kelly captioned the snap, “It's not a #FullMoon but it feels like one!”

Posing on her knees beside friend and hairdresser Ryan Randall, he seems more interested in the flowers he’s carrying than Kelly’s pert derriere, but we’re all about that toned behind.

Forcing us off of the couch and into the gym, we’ve compiled 10 more celebrity #belfies from Instagram, to give you serious ass envy.