Zac Efron celebrated his 21st birthday with friends, family, and girlfriend Vanessa Hudgens. The group met at L.A.'s Pace restaurant, and shared a nice meal together.

Several other celebrities attended. From High School Musical, costars Monique Coleman and Ashley Tisdale came, along with her boyfriend Jared Murillo. Also in attendence where Michelle Trachtenberg, Amanda Bynes, Brittany Snow and the singing sisters Aly and AJ Michalka.

Several of the guests brought Zac Efron something he can really use now that he's 21: bottles of liquor.

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