13 of the Youngest "Saturday Night Live" Hosts of All Time

Fashion icons Mary-Kate and Ashley Olsen came onto "SNL" in 2004 shortly before their 18th birthdays to promote their film "New York Minute," which, incidentally, happens to be the last movie they starred in together. After they turned 18, the twin sisters became entrepreneurs and have moved away from acting — though their sister Elizabeth has taken up the mantle.