If you were a young girl in the '90s, Mary-Kate and Ashley Olsen were your dream best friends. You can probably count the times that you stayed up late watching one of their many movies or TV shows, ranging from the classics like Double, Double, Toil and Trouble, Full House, and It Takes Two to their final movie, New York Minute. And don't forget their VHS series like You're Invited to Mary-Kate and Ashley's Party or The Adventures of Mary-Kate and Ashley! In honor of the Olsen twins' birthday this week, we're celebrating by seeing who is the biggest fan. Check off how many of their movies and shows you've watched below!