Another 'Fifty Shades' Casting Announcement: Anastasia Steele Has a Best Friend
is the latest actress cast in the Fifty Shades of Grey
movie. She'll play Kate Kavanaugh
, the best friend and roommate of Anastasia Steele. Mumford joins Jamie Dornan
and Dakota Johnson
, who've been cast to play the lead couple of Christian and Anastasia.
Mumford has starred in the TV shows Lone Star and The River. She was also in the little-seen, direct-t0-video Miley Cyrus/Jeremy Piven masterpiece So Undercover.