Dawson Casting: The cast is primarily comprised of 20somethings playing high school students note with the exception of Cinta Laura as Utami, Maia Mitchell as Beatrice (both 18 during filming), Erin Moriarty as Vivian (17 during filming) and Daryl Sabara as Chips (19 during filming) . In Petra's case, at least, this is reasonable — she had an affair with her professor, and to cast an age-appropriate actress in that role would be sketchy at best.