Us Weekly delves into 32 iconic fashion look of Mary Kate and Ashley Olsen as the dynamic duo turned 32 on Wednesday. The dynamic duo Mary Kate and Ashley Olsen started trading places as Michelle Tanner on Full House when they were just nine months old, and they’ve been working ever since. Whether they are all dressed up in drapey couture at the Met Gala or chicly schlepping through the airport in socks and sandals, their boho vibes have inspired a generation of copycats.