Twin sister of Ashley Olsen.
Older sister of Elizabeth Olsen
In real life she and Ashley are very close to John Stamos, who played their uncle Jesse on "Full House" (1987).
Enjoys shopping, going to the movies, listening to rock music (ie., Counting Crows), cheerleading and Tae Bo with her sister.
Has two horses, CD and Star, and has won several prizes with them.
She and Ashley both had to wear fake teeth during the later years of "Full House" (1987) because their teeth began to look different
At age 6, she and Ashley became the youngest producers in history.
Has a bi-monthly magazine called Mary-Kate and Ashley Magazine
Has a line of clothing with sister Ashley that is sold at Wal-Mart
Enjoys yoga and horseback riding.
In 1993 she and Ashley were supposed to play young Eves (Teena and Cindy) on "The X Files" (1993), but were eventually replaced by the Krievins twins (Erika Krievins and Sabrina Krievins) from the nearby of Vancouver. The reason were very strict child labor laws.
On their 17th birthday (June 13, 2003), the US's Cable News Network (CNN) announced not only their birthday but the twins' total financial worth - $150,000,000 for each. The same news source predicted the twins may be billionaires by the time they're 21.
Ranked #61 in FHM's '100 Sexiest Women' poll of 2003
During the earlier seasons of "Full House" (1987), the producers did not want it known that Michelle was played by twins, so Mary-Kate and Ashley were credited as Mary Kate Ashley Olsen.
Voted the 20th most wanted young star for the new year by Access Hollywood and The-N networks. Her sister Ashley wasn't part of the honor.
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