Mary-Kate and Ashley Olsen began their acting career at 9 months old when they were chosen to play the role of Michelle Tanner on the TV show “Full House.” Needless to say, the show was a huge success and they continued to share the role until it’s end in 1995. During those years, they teamed up with Robert Thorne and created Dualstar, their production company. Since then they have made 13 movies, put out 169 books, and have 5 TV shows. Today, with a production company that makes $1 billion in sales and a fashion line under their belts, the Olsen twins have become the youngest self-made millionaires.