Sasha Pieterse was born in Johannesburg, South Africa, and emigrated over to the United States when she was 3 years old. Pieterse grew up around show business. Her parents were both professional dance partners who performed all over the world, and Pieterse loved being on stage with them. She soon met with an agent who quickly signed her to an acting and modeling contract. She started in the business at the age of 4 working on commercials and print work.

At 6 years old, Sasha Pieterse got her start in television, co-starring in 2002 as "Buffy" on The Warner Bros. comedy series "Family Affair." In 2004, she appeared in "Stargate SG-1." She started to rise to fame as an actress when she played in "House M.D." as a young girl named Andie with terminal cancer. Her performance in "House M.D" was later considered for a daytime Emmy in 2005.

In 2005, she appeared in her first film "The Adventures of Shark Boy and Lava Girl" cast as Marissa the Ice Princess who is the daughter of Mr. Electricidad, and at first, the only student who befriends Max.

Pieterse has done numerous television commercials including long-running national spots for “Nesquick” and “Firestone Tires.” She was featured on a billboard for “Supercuts” that appeared throughout the country, then she sang and modeled in the Macy’s Passport Fashion Show, performing throughout California. During 2006 she filmed for a feature starring Sarah Michelle Gellar, "The Air I Breathe," and she landed a lead in a Hallmark Hall of Fame Movie as Maggie in "Claire." In 2006, Pieterse appeared in "Good Luck Chuck" as a young goth girl named Anisha.

In 2009, Pieterse made an appearance in "Without a Trace" and landed a recurring role as Amanda Strazzulla in "Heroes." Pieterse was then cast as Alison DiLaurentis, the former "Queen Bee" of her clique and the most popular and beautiful girl in her school before her disappearance and death. Being only 17, she is the youngest actress on the show, all her co-stars being in their early to late 20s.

Sasha's personal interests include, cooking, baking, photography, traveling, jewelry making, rock climbing and interior & exterior design. She also is a fan of the Green Bay Packers.

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