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 starred in Parenthood from 2010 until 2015.
She was a model for McDonald's commercials as a child.
She was home-schooled because her parents followed the religion of Scientology.
She has an older half-brother named Nick and two younger twin brothers named Brando and Dane. In 2015, she married cyclist Cole Maness; they welcomed a daughter named Shane in 2016. In August 2018, they welcomed their second daughter, Polly.
She starred in the 2010 television series Parenthood with Peter Krause.