There's a whole load of wonderfully rendered clothing in WoW, a lot of people use these to RP and just look damned cool/sexy/awesome.
in particular certain robes, lots are provided from the world events but in my opinion the best one's are from Vanilla raids and dungeons. I remember a caster friend of mine with a well rendered one from Zul gurub, cant remember what it was called though.
I love the simple but nice looking Journeymans Robe and the well designed Red Imperial Robe [many color varients of it]