Mary-Kate and Ashley Olsen have been style icons for most of their lives, but the famous twins -- who turn 26 Wednesday -- rarely dress alike on the red carpet.
"Until we were 13 or 14, if my sister and I did an appearance, we would be wearing the same outfit," Mary-Kate told Interview in 2009. "It would be the same dress and we'd fight over who would wear it in red and who would wear it in black. That was obviously for work.
"But ever since I can remember, we dressed completely differently. Ashley would wear really baggy clothes and shoes that were too big for her, and I think my first favorite clothing item was a pair of spandex shorts with fringe on them! Leopard and white spandex. Ashley was more into florals and baggier clothes. So, I guess things don't change that much!"
Though they're now the successful designers behind three major labels -- The Row, Elizabeth and James and Olsenboye -- the Olsen twins weren't always so savvy when it comes to fashion.
"When I was young, clothes were really just about what fit, because Ashley and I were so tiny," Mary-Kate explained. "So I understood fit before I understood style."
To compare the sisters' red carpet looks -- and vote for whose you like best! -- check out Us Weekly's gallery now!