Mary-Kate and Ashley Olsen chatted with ET in 1998 on the set of their '90s sitcom, 'Two of a Kind.' The post came the same month that news broke that Ashley gave birth to a baby boy. Ashley Olsen ...

Mary-Kate Olsen is an American fashion designer, entrepreneur and actress. She rose to fame in 1987 as Michelle Tanner on Full House, a role she shared with her twin sister Ashley Olsen.