Warner Bros/Everett Collection; Larry Busacca/Getty Images
Double up the birthday cake—Mary-Kate and Ashley Olsen turn 26 today! To celebrate, we're taking a look back at the twins' Hollywood transformations, from Full House babies to award-winning fashion designers. See their evolution in the galleries!
MORE:• Mary-Kate and Ashley Win at the CFDA Awards• Celebrity Bikinis 2012: Ashley Olsen• Preview the Olsens' Fall Collection for The Row
