'Twilight' vampire hunk Robert Pattinson enjoys the night life. Hollywood.tv spotted the actor signing autographs and taking pictures with his fans.

Paris Hilton was also seen out with the winner of her show "Paris Hilton's My New BFF," Brittany Flickinger.

Comedians Chris Rock and David Spade were seen leaving Madeo Ristorante.

And singer Katy Perry wishes photographers a "Happy Holidays" as she walks to her car.