So far, in my short 6-months of playing this game, I have never seen someone look exactly identical to another unless it was either intended, wearing an outfit, or they were just not so interested in striving for a unique look (those who just buy and wear full cultural armor set, etc.) It pleases my eyes to witness some really cool or funny designs people had for their characters. Me trying to find a game to play with a friend together got me started, the sense of your character being practically an empty canvas in front of you to express your ideas was what made me stay.
P.S. The friend who initially introduced me to the game quit after two weeks :/ what the heck.