Called "style-free and fashion deprived," Britney Spears and Paris Hilton tied for the No 1 spot on Mr Blackwell's 47th annual "Worst Dressed" list released on Tuesday.

"Two peas in an overexposed pod," Blackwell said of the skimpy attire worn by the two women he called the "Screamgirls."

Some of his nastiest words were reserved for Camilla Parker-Bowles, a member of the British royal family who finished No 2.