Named one of People Magazine's 'Breakthrough Stars of 2001'.

Elder sister of Dane Christensen and his twin brother Brando.

She is a talented singer.

She attended Delphi Academy, a private primary and secondary school in Los Angeles that is run according to the philosophies of L. Ron Hubbard and the religion he created, Scientology. To research her role in _Traffic_, Christensen also consulted Narconon, a chain of drug rehab centers run by the Church of Scientology.

She has had to research several movie roles in which her characters experience various aspects of school life; this is because Erika never went to public school, but was tutored at home by her parents. Also, unlike her Swimfan (2002) villain "Madison Bell," she is a superb real-life swimmer.