Rising to fame as Amanda on the series "Heroes," Sasha Pieterse got her start playing Buffy on the 2002 update of the 1970s sitcom "Family Affair. " Born into a South African show business family, the young performer toured the world with her dancer parents before settling in Los Angeles. After breaking into TV with "Family Affair," Pieterse appeared in "House M.D." and "CSI: Miami," and the film "Good Luck Chuck" before finding her niche in "Heroes." In 2010, she joined the cast of the mystery series "Pretty Little Liars," and in 2011 appeared in the feature "X-Men: First Class."