She attended the Orange County High School of the Arts and is currently attending the University of California, Los Angeles.

She is best known for playing the gymnast Wei Wei in the 2006 teen comedy Stick It and playing Fiona Lanky in the Disney Channel show Phil of the Future. She also played the one of the seven main cheerleaders in the fifth installment of the Bring It On series called Bring It On: Fight to the Finish. SooHoo went on to play in Sue Ling in the TV series The War at Home.

She starred in the 2009 film The Lovely Bones as Holly.