Hollywood is not entirely foreign to the Race to Witch Mountain actor - his father Harald Horst Ludwig is the Co-Chairman of the Board for Lionsgate Entertainment Corp, which produces The Hunger Game films.The busy blond beefcake has three films due out this year - the Adam Sandler comedy Grown Ups 2, the indie revenge thriller Final Girl with Abigail Breslin, and the action-thriller Lone Survivor with Mark Wahlberg.
She also played the lead role of Carrie Bradshaw on The CW's series The Carrie Diaries from 2013 to 2014.
At age 9, she was scouted by an agent, and she and her mom drove down to Los Angeles.
After several auditions, she was given the opportunity to appear in a commercial, advertising Bratz dolls that would be aired nationally.
After appearing in a commercial for Mc Donald's, Robb had a small role in the episode, "Number One Fan" of the television series Drake & Josh.
Her first major role was the title character in the television special, Samantha: An American Girl Holiday. Robb's two big-screen appearances in 2005 were both adaptations of popular children's books.
She starred as Opal in Because of Winn-Dixie and as the competitive and rude Violet Beauregarde in Tim Burton's remake of Charlie and the Chocolate Factory.
The latter was a major box office success worldwide, and helped escalate Robb's popularity among pre-teen audiences.
In 2005, Robb was the face of Trad Clothing, helping to design and model a fashion line for girls.
In 2006, she had a guest role on the cartoon show, Danny Phantom as the voice of Danielle "Dani" Fenton. She recorded a song for the soundtrack titled, "Keep Your Mind Wide Open", and the accompanying video received rotation on the Disney Channel.