On the same day John Mayer is playing a concert in N.Y.C., Simpson rolls into town with pooch Daisy. Plus: Paris, Gwyneth, Taylor and more

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GUYS 'NEXT DOOR'

It's the American Idol posse! Ryan Seacrest, Simon Cowell and Randy Jackson can't get enough of each other's company at a party for E!'s new series Paradise City and season 3 of The Girls Next Door at the Playboy Mansion in Los Angeles on Tuesday. Seacrest serves as producer on the new show about 20-somethings trying to make it in Sin City.

For complete Idol coverage, click here.