Singer Britney Spears (L) and socialite Paris Hilton are seen in this combination file photo. Spears and Hilton shared the number one position on Mr. Blackwell's 47th annual Worst Dressed Women List released January 9, 2007. [Reuters]

Los Angeles - Dubbed "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 Tuesday.

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

Some of Blackwell's nastiest words were reserved for Camilla Parker-Bowles, a member of the British royal family, who finished No. 2 on the list.

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