Stewart's acting career began at the age of eight, after an agent saw her perform in her elementary school's Christmas play. Her first major role was for the Panic Room, playing the sullen, diabetic daughter of a divorced mother (Jodie Foster).

In 2007, Stewart starred in Sean Penn's critically acclaimed adaptation film Into the Wild. After which she had a cameo appearance in Jumper and also appeared in What Just Happened.

In November 2007, it was announced that Stewart would play Isabella 'Bella‘ Swan in the movie Twilight, based on Stephenie Meyer's bestselling vampire romance novel. Stewart was on the set of Adventureland, in which she plays lead character Em Lewin, when director Catherine Hardwicke visited her for an informal screen test which "captivated" the director. After the release of Twilight, Kristen Stewart was awarded the MTV Movie Award for Best Female Performance for her portrayal as Bella Swan. Stewart reappeared as Bella in the sequel, New Moon, and will reprise this role in Eclipse.

Här är Kristens filmer:

• The Safety of Objects (2001)

• Panic Room (2002)

• Cold Creek Manor (2003)

• Undertow (2004)

• Fierce People (2005)

• Zathura: A Space Adventure (2005)

• The Messengers (2007)

• Into The Wild (2007)

• What Just Happened? (2008)

• Jumper (2008)

• Twilight (2008)

• Adventureland (2009)

• The Twilight Saga: New Moon (2009)