Leven Rambin by Brian Ach/WireImage.com Leven Rambin by Brian Ach/WireImage.com

It's official: Leven Rambin, who for the past few years has starred on All My Children as both Lily, who has autism, and her wild-child sister, Ava (there's always a look-alike, isn't there?), is joining Terminator: The Sarah Connor Chronicles as a series regular.

When Season 2 of the Fox series gets underway, Rambin will play Riley, a new school friend of John's.

Leven, Summer Glau.... John-boy, never mind the future. Your present is some sweet shizzle! Stay put. - Matt Mitovich