78violet sisters Alyson and AJ Michalka put on their best black as they arrive at the premiere of Bandslam held at Mann’s Village Theatre on Thursday evening (August 6) in Westwood, Calif.

Aly, 20, plays the lead female in the flick, Charlotte Barnes. She tweeted earlier last night, saying, “Heading to the premiere in 10…such a wonderful night to celebrate. Thank you for all your support! Xo aly.”

In the rockin’ movie, a new kid in town (Gaelan Connell) who assembles a fledgling rock band to compete against the best in the biggest event of the year, a battle of the bands. Bandslam hits theaters NEXT Friday, August 14th.

Also pictured below: Charlie Saxton, Tim Jo and Elvy Yost.

75+ pics inside…