Hilary and Haylie Duff are pretty good at keeping their cool and staying out of trouble (Spears sisters, take notes).

But they really lost their temper at the paparazzi, who stalked them during the court proceedings of their parents’ divorce. “What’s wrong with you?” they screamed, starting an exchange of swear words and insults that would make even Rosie O’Donnell blush.

Perfectly understandable, of course. Paparazzi should’ve realized it was a difficult time for the girls. Go stalk somebody else, boys — maybe Amy Winehouse is wandering around in the next street.