Britney Spears, along with dad Jamie Spears, made a late appearance at Phil Maloof’s Beverly Hills music-label bash for the Rev Theory band Wednesday night.

The popster arrived around 11:30, as the party was dying down, and held court in a roped-off VIP room at the front of the house.

“It was like an exhibit at a zoo,” says another partygoer, Katie Thiele. “There was a line of people waiting to look in and see the Britney exhibit.”