Mary-Kate Olsen
Born June 13, 1986 in Sherman Oaks, California.
She has a fraternal, not identical, twin sister, Ashley Olsen.
She began acting when she was nine months old as Michelle Tanner along with her twin sister.
She has appeared on many many Movies and TV shows and even has her own video game: Mary-Kate and Ashley's Magical Mystery Mall.
She appeared in Full House, Two of a Kind and So Little Time.
She has no middle name.