
Her parents divorced when she was two years, Kristen has two half sisters, Sara and Jody, the second marriage of his father and four half-siblings from the second marriage of his mother to John Raymond Avedian, Laura, John , Avedian Matt and Megan.
Bell strabismus, which affects his right eye. She inherited from her mother, who had corrected as a child. Bell claims that if she does not have enough sleep, it worsens the disease. Kristen Bell called her right eye "Wonky". At age four, she asks her mother to use her middle name because she disliked her first name.

In 1992, Kristen spent her first audition and won a dual role as a banana and a tree in a theater production in Detroit. His mother moved with an agent when she was 13, which allows it to appear in advertisements in local Detroit both on television and in newspapers.
She began to take acting classes before lending his face to Sally Wister in The History Channel's Choosing Sides: Young Voices on the Revolution in a play Hall visitors center in Philadelphia. Just before graduating high school, his parents decided to withdraw from the public school system and make him continue his studies at a private institution, the Shrine Catholic High School, near Royal Oak, where she participated in clubs, theater and music.

Kristen said later that it was both "the worst and the best thing that ever happened to me. When we realize that we should not take people for granted, we live a much happier life. " Shortly after graduating high school, Kristen moved to New York and taking acting classes at the Tisch School of the Arts in New York.
In 2001, during his final year at university, she won the role of Becky Thatcher in the play The Adventures of Tom Sawyer on Broadway, and then comes face to Liam Neeson in The Crucible. She then began timidly on the big screen by the numbers.