Winfrey spreads the word: She's got her own station. Plus: Jennifer Aniston, Tom & Katie, and more

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SISTER ACT

Jessica and Ashlee Simpson make the rounds – separately – over the weekend in London. Ashlee (left) gets dialed into the theater world Saturday in preparation for her West End debut as vixen Roxie Hart in Chicago. And Jessica – who's in town to cheer her sister on at Monday's opening night – attends a London Fashion Week party on Friday.