(2 of 8) Beauty Evolution: Mary-Kate & Ashley OlsenBoy, they grew up fast! From tiny TV tots to innately stylish paparazzi magnets, the Olsen twins have beautifully blossomed right before our eyes. While the mini multimillionaires may look just alike, their personal style choices couldn’t be more different. One thing they both agree on? Playing hair-hue switcheroo! July, 2001 Wait … which one is which? At the Hollywood premiere of Rush Hour 2 on July 26, 2001, both girls have highlighted blowouts, so it’s hard to tell the difference between them. By the way, Ashley’s on the left!