Aly & AJ Michalka In Wonderland

78violet sisters Aly and AJ Michalka happily sign some autographs as they leave Wonderland nightclub in Los Angeles on Friday night (April 2).

Aly, now 21, just celebrated her birthday with friends and family at the club. Friends who showed up to party with the duo were Aly‘s Hellcats costar Ashley Tisdale, Renee Olstead and Devin Bronson.

Aly and Ashley will be heading back to Vancouver soon to film the pilot for Hellcats.