Elle danse le hip-hop, jazz, danse irlandaise, et est aussi mannequin dans des défilés de mode.
De 2008 à 2011, elle fut en couple avec l'acteur canadien Alexander Ludwig, rencontré lors du tournage de La Montagne ensorcelée.
We sit down to chat with the star of Bridge to Terabithia, who you'll probably already recognize from Charlie and the Chocolate Factory and Because of Winn-Dixie. Anna Sophia Robb: Bridge to Terabithia is about a young boy and a young girl who become unlikely friends and they're both kind of outcasts from their school. You get to travel to different places and you're not committed to a whole season. The other reason I don't do too much TV is because I can live in Colorado, you know, where I'm from, and keep going to the same school.
And they end up developing this amazing friendship and this magical world that they call Terabithia, where they don't have to face the problems that they have in the real world. There's such a big mob around him all the time, so when I was filming with him I got nervous because everyone was making such a big deal about him. Anna Sophia Robb: Quite frankly, they're tired of it.
In 2004, she played the role as Samantha Parkington in the TV film Samantha: An American Girl Holiday.
In 2004, she guest appeared in an American television sitcom Drake & Josh for her role as Liza in an episode dated “Number One Fan”.
But Charlize Theron - I just recently worked with her - and she's such an amazing actress.La même année, elle apparaît en jeune sauvageonne tyrannisée dans Les Châtiments ainsi que dans La Montagne ensorcelée où elle interprète une jeune extraterrestre nommée Sara venue sauver sa planète avec son frère Seth.