CHRIS ROCK IS ON SET ACTING HOLLYWOOD!

Could Chris Rock be a bigger diva than Jennifer Lopez? An on-set source says the funny guy, who is starring along-side the "American Idol" judge and a hoard of other A-listers in "What to Expect When You're Expecting," is demonstrating some very divo-like behavior on location in Atlanta, Ga.

According to the insider, Rock is the only cast member who gets shuttled in something besides the standard transportation vans from one filming location to the next. His vehicle of choice? A black Escalade. But maybe he needs the extra room: His posse includes a personal hair stylist, makeup artist and body guard that "are always within 10 feet of him." Typically, hair and makeup are kept in a separate tent while shooting. The cast also includes Cameron Diaz and "Sports Illustrated" model Brooklyn Decker.


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