Paris Hilton has always been the prime prima donna on the set of E!'s The Simple Life ... until now.

Sources on set tell celebrity gossip blog TMZ that this time around, Nicole Richie got all divalicious during taping of the show's fifth season.

During the shoot, we're told Nicole pulled a Lindsay Lohan, constantly showing up late. She also upped her spoiled behavior to another level during the final shoot of the season, when the all-important "show open" was being taped.

Richie turned up "several hours late" with boyfriend Joel Madden, and then gave producers another impossible deadline. After a serious blow-out argument, we're told producers had to call her agents just to get her to stay on-set.

Who knows where she went, but we're guessing it wasn't to eat a meal. The newest season of The Simple Life, meanwhile, premieres May 28.