Aly & AJ are Malibu Michalkas

Singing sisters Alyson and AJ Michalka dolled up for Barbie’s 50th Anniversary celebration at the Malibu Dream House in Los Angeles on Monday evening (March 9).

The twosome are currently working on songs for their fourth album.

Aly, 19, will next be seen starring alongside Vanessa Hudgens in Bandslam. She plays Charlotte Banksasks, the popular girl who forms an unlikely friendship with an outcast through their love of music.

Bandslam hits theaters in August.