Mary-Kate Olsen is an American actress, fashion designer, and businesswoman, best known for her role as Michelle Tanner on the popular television series Full House. Along with her twin sister, Ashley Olsen, she became a household name in the 1990s, starring in various films and television shows. In addition to her acting career, Mary-Kate has made a significant impact in the fashion industry. She co-founded the luxury fashion brand The Row and has received acclaim for her unique style and design sensibility, establishing herself as a prominent figure in contemporary fashion.