Kelly Osbourne: I've Lost 20 Pounds on DWTS -- But I'm Still "Starving!"

The reality star, 25, has dropped 20 pounds as a result of her stint on Dancing With the Stars, but not without sacrifice, she says.

"I'm f------ starving right now!" Osbourne told Usmagazine.com backstage at Monday's performance show in Los Angeles, where Osbourne and her partner Louis van Amstel earned rave reviews for their '60s-inspired jive.

And though she's hungry, Osbourne's svelte new bod is turning heads. Van Amstel, who has helped the now size-2/4 Osbourne waltz her way into the final five, can definitely see the change in his partner's figure.

At least she is keeping it real. She says it is not just the dancing. It is also the not eating that is getting the weight off. Past contestants like Denise Richards said she was dancing and eating pizza and lost weight.