Hef and the girls party at last week's Derby!

The Kentucky Derby always brings out a lot of celebs. Hef, the Girls Next Door and a dozen Playmates mingled with a stable of celebs that included Michael Jordan, Gabrielle Union and Joe Piscopo, not to mention some bona fide royalty with the appearance of Prince Albert II of Monaco. See the entire 50+ pictures here. Yep! That's kid Capri up there with the bunnies!