Robertson appeared in CSI: Crime Scene Investigation in the episode "Go to Hell", and had a role as a recurring character in the CBS television series Swingtown.
In 2009, she played a small role as DJ in The Alyson Stoner Project.
The show, while set in Portland, Oregon was actually filmed in Vancouver, British Columbia.
In late autumn 2010, she starred as Allie Pennington in the Disney Channel original film Avalon High, which is based on Meg Cabot's book of the same name.
She made a guest appearance on Power Rangers Time Force the following year and received a Young Artist Award nomination for Best Performance in a TV Movie, Miniseries, or Special – Leading Young Actress for her role in The Ghost Club (2003).
Robertson went on to have roles in Growing Pains: Return of the Seavers (2004), Keeping Up with the Steins (2006), Dan in Real Life (2007), The Tenth Circle (2008), Mother and Child (2009), Avalon High (2010), Scream 4 (2011) and The First Time (2012).
At age 12, she began making extended trips to Los Angeles to audition for roles in television series and landed a role in a television pilot for a series which was never picked up by a network.
That same year, she headlined the Netflix comedy television series Girlboss, portraying a fictionalized version of self-made millionaire Sophia Amoruso.
She currently stars in the ABC legal drama For the People. She is the oldest of seven children; her mother and stepfather have three children (2 girls, 1 boy), and her father and stepmother also have three children (1 girl, 2 boys).
Kidzworld: The main message I got from the movie is to follow your passion.
Sometimes kids and teens have parents trying to guide them in a direction they don't want to go in.
Brittany Leanna Robertson (born April 18, 1990) is an American actress.