Selma Blair Beitner (born June 23, 1972) is an American actress. She is known for her roles in Cruel Intentions, Legally Blonde, The Sweetest Thing, and the Hellboy franchise. Blair, born in Southfield, Michigan, emerged from a background in legal and political involvement: both her parents were lawyers and her father was active in the U.S. Democratic Party. Blair's upbringing was predominantly Jewish. She initially pursued photography at Kalamazoo College before moving to New York to become involved in the arts, graduating from the University of Michigan. Blair's early career was marked by numerous auditions to land her first roles in television and film, with her breakthrough in Cruel Intentions and subsequent mainstream success in projects like Legally Blonde and Hellboy. After being diagnosed with multiple sclerosis (MS) in 2018, she has shared her experience with the condition, contributing to her advocacy work. In 2021, Blair starred in Introducing, Selma Blair, a documentary about her life since being diagnosed with MS. Her autobiography, Mean Baby: A Memoir of Growing Up, was published by Knopf in 2022.