Olsen turns out for a rockin' rooftop party in New York City. Plus: Gwen Stefani, Prince Harry, Shannen Doherty and more

DOG DAY AFTERNOON

Kirsten Dunst hits the street Wednesday for lunch at L.A. restaurant Ammo and a stroll with her pooch. The actress recently made tongues wag when she stepped out two nights in a row with Drew Barrymore's ex Justin Long.