Polyvore is full of incredibly talented people and I've had a wonderful time discovering some of them in the few months I've been here.
One Polyvorian whose sets never fail to catch my eye - and my admiration - is fede92 (Federica). Her style keeps the focus on the clothes, just where I like it, and her sense of style and color is wonderful.
Check out her page at @fede92 to see all the great sets I didn't include here! :-)