The Fashion Police played a hilarious game of "Guess Me From Behind," and it was all about beach back sides!
The first picture was a tan, bootylicious mama and her kid with snorkeling gear in the ocean. Joan Rivers jokes, "It could be an old picture of Katie Holmes, with Tom Cruise on the honeymoon, but I don't think so."
Oh Joan! You may be surprised to find out what hot celeb it really is!
Watch the above clip to see Joan and her pals chat about these hot celebs on the beach!
Tune-in to an all-new Fashion Police this Friday at 9/8c on E!