Things you didn`t know about Dakota Johnson

Washington: With Dakota Johnson being cast as Anastasia Steel in the upcoming flick `50 Shades of Grey` based on the erotic trilogy by EL James, fans might want to know more about the actress.

Us Magazine has unearthed some lesser known facts about the 23-year-old actress.

Johnson is the daughter of famous parents Melanie Griffith and Don Johnson, who were married six months in 1976 and again in 1989 for seven years.

The American fashion model-actress made her acting debut when she was 10 years old, with her half-sister, Stella Banderas in `Crazy in Alabama` in 1999.

Johnson, who appeared in the hit `The Social Network`, played the character of `Amelia Ritter` who introduces Justin Timberlake`s `Sean Parker` character to Facebook following a random hookup.