Zac turned 21 this weekend with an intimate group of friends at the night club Pace in Hollywood.
Vanessa Hudgens, Monique Coleman, Ashley Tisdale and her boyfriend Jared Murillo where are the few chosen to spent the evening with him. Twins Aly and AJ Michalka and Michelle Trachtenberg were also there.
After eating the went to Chateau Marmont and Zac opened boxes of gifts, mostly vodka and whiskey. That's being 21!