She became famous for her roles in movies like Swimfan and The Perfect Score. After playing a druggie in 2000's Traffic, she received the MTV Movie Award for Female Breakthrough Performance.
She was a model for McDonald's commercials as a child.
She was home-schooled because her parents followed the religion of Scientology.
Born to Kathy and Steven Christensen, she has an older half-brother named Nick and two younger twin brothers named Brando and Dane. In 2015, she married Cyclist Cole Maness. She and Maness welcomed a daughter named Shane in 2016.
She starred in the 2010 television series Parenthood with Peter Krause.
