[4] Doubleday first appeared in a commercial for Goldfish crackers at age eight and had a small role in the film Legend of the Mummy (1998).

[2] After graduating high school Doubleday was cast in the pilot episode of United States of Tara, a television series created by Diablo Cody.

[4] She plays Sheeni Saunders, an imaginative girl with a dreary life who meets Michael Cera's character while on a family vacation.

In 2010, Doubleday starred in the drama Almost Kings (formerly known as Touchback) directed by Marvin Jarrett (the founder of Nylon magazine).

[6][7] She played the popular and monstrous Chris Hargensen in the 2013 adaptation of Carrie, a role which was originally held by Nancy Allen.

In September 2014, it was announced that Doubleday had joined the main cast of the USA Network pilot for the TV series Mr.