ROCK offspring Kelly Osbourne showed off her svelte new figure while posing for photographers at Mercedes-Benz Fashion Week in New York City this past Saturday.Kelly — daughter of Ozzy and Sharon Osbourne — has previously revealed that taking part on Dancing With The Stars helped her lose weight. “My whole life has changed so much since Dancing With The Stars,” she said in October. “I’ve never felt so healthy. Pilates is amazing, my posture is so much better and I’m even starting to get muscles on my tummy — it’s incredible. I’ve become totally obsessed with Pilates, everyone should try it.”