No, Kevin Federline isn't co-starring in "Spring Breakers" with Selena Gomez, Vanessa Hudgens and Ashley Benson ... but can you tell which superstar that really is?
It's James Franco! Selena tweeted the first photo of the actor on set earlier today, where he looked exactly like Britney Spears' cornrowed ex-husband, K-Fed.
Franco looked pretty comfortable surrounded by all the young, bikini clad ladies.
In the flick, James plays a drug and arms dealer who bails the girls out of jail after they rob a restaurant to pay for their vacation.
Check out more set photos above!