(1 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! November, 2000 Not much difference here with then-tweens Mary-Kate and Ashley—the loving sisters both pull pieces of their choppy blond bobs into several cutesy ponytails.