PAMELA, ASHLEE ATTEND WHITE HOUSE DINNER

It isn't every night that celebs like Ashlee Simpson, Lauren Conrad, Heidi Montag, Spencer Pratt, Pamela Anderson and the Jonas Brothers descend on Washington, D.C.

The stars — along with Ben Affleck, Jennifer Garner, Rob Lowe, Marcia Cross and "Gossip Girl" star Ed Westwick — were guests of various news organizations for the White House Correspondents' Association dinner Saturday night.