Kelly Osbourne is "terrified" about appearing on "Dancing With The Stars." The presenter has signed up to star on the U.S. celebrity dance contest and although she is "excited" about competing, she admits it is a scary prospect because her abilities are so limited.

She told KIIS-FM radio host Ryan Seacrest: "I am so excited but I cannot tell you how terrified I am!"

Simon Cowell partied with lingerie-clad models at the infamous Playboy mansion on Saturday night. The TV mogul attended magazine founder Hugh Hefner's annual Midsummer Night's Dream party, held at the 83-year-old's Los Angeles home.

Jon Voight, Shaquille O'Neal, Jack Osbourne, James Van Der Beek, Ryan Seacrest, Randy Jackson, Shannon Elizabeth, Jon Lovitz and Hefner's former girlfriend Bridget Marquardt also attended the bash.

Victoria Beckham is set to become a judge on "American Idol." The 35-year-old star has reportedly been approached by the show's producer Simon Fuller - who managed the Spice Girls and is an advisor to Victoria's husband David - about replacing Paula Abdul on the popular U.S. TV series.

Paula revealed she was quitting Wednesday. It is believed she made the decision following a row over pay.