Victoria Beckham, Katy Perry Victoria Beckham, Katy Perry

American Idol may be losing Paula Abdul, but it's gaining Katy Perry and Victoria Beckham as guest judges, Fox announced Thursday.

No dates have been set for the pop stars' appearances, but more big names are to come, Fox entertainment chairman Peter Rice said at Thursday's Television Critics Association fall TV tour. None of the people the show is talking to are potential full-time replacements for Abdul, Rice said.

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