We bet Luke Worrall is totally kicking himself!

Since splitting with her model beau in July, Kelly Osbourne has not only bagged herself her first ever movie role, but a smokin’ new look too!

And judging by these pics, she’s more than happy to show it off!

The TV babe, who’s looking better than ever, flaunted her new platinum blonde hairdo and her incredible slim figure in a raunchy performance on stage alongside The Pussycat Dolls.

The 25-year-old, who’s lost a massive three dress sizes since appearing on US show ‘Dancing With The Stars,’ flaunted the results in a sparkly black bra, fitted corset and fish net tights while dancing alongside the burlesque troupe, actress Carmen Electra and singer Mya.

Just ahead of her risqué performance, ‘The Osbournes’ stunner told her fans in her Closer magazine column, “It’s going to be me, Carmen Electra, Mya and some of the other Dolls singing and dancing.

“I’m doing a song called 13 Men as well as Big Spender.

“It’s the first time I’ve really danced since filming Dancing with the Stars, but it’s so different. 'This isn’t stiff ballroom - it’s slinky and sexy!”

Meanwhile her pal and fellow reality star Kim Kardashian was one of the lucky few guests to be invited to the bash at Los Angeles’ Viper room.

Following the show she tweeted to fans, “OMG @MissKellyO just killed it!!! She sang and danced and looks amazing!!!!! Love these costumes!”

Copyright : MTV Australia