Alyson Michalka is a Red Carpet Ruby

Alyson Michalka gets glamourous in a red ruby dress at the premiere of Twilight at Mann Village’s Bruin Theater on Monday night in Westwood, Calif.

The 19-year-old singer and her younger sister, AJ, recently posted a new video on their official site. They go into a bat cave in Aruba! Be sure to watch all the way to the end — that’s where where they encounter bats! EEEE!

Alyson will be co-starring with High School Musical sweetheart Vanessa Hudgens in the upcoming Bandslam, set to hit theaters in July 2009.