Without trying to be funny or edgy or whatever, honest answer to the question...if by celebrities we mean "Hollywood A list circle" I think over 50% of them done it.
But it's a tricky stat line if we're talking about Hollywood, because most women there are shiksas but most men there are kikes, and they have pedo shit in their religion so they don't see it as abnormal, and you can't really blame them. Once you learn a rabbi has sucked your bloody dick when you were 2 weeks old, I guess the rat brain starts to think that anything older than 2 weeks is fair game.