Mary-Kate Olsen is an American actress, fashion designer, and businesswoman. She was born on June 13, 1986, in Sherman Oaks, California. Along with her twin sister Ashley, Mary-Kate began her acting career at the age of nine months, with the television sitcom “Full House”. The sisters continued their success with various films and became known for their brand “Mary-Kate and Ashley”, which included clothing lines, cosmetics, and books. In recent years, Mary-Kate has focused more on her fashion career, co-founding luxury fashion brands such as The Row and Elizabeth and James. She has received critical acclaim for her fashion ventures and has become a prominent figure in the fashion industry.