Polyvore.com. it's amazing.

If you haven't played around on www.polyvore.com, or at least looked at it for inspiration, well then you're missing out my dears! If you were a fashion major in college or a middle school girl at one point then, you're quite familiar with the concept of inspiration boards. Polyvore is basically a medium for creating collages minus paper cuts and glue sticks. It's a great site for experimenting with clothes and figuring out how a new piece would work in your current assortment. Also, a good way to kill time at work and a good alternative to wasting time stalking your quasi-friends on facebook.

Days into Nights into Days - by gagey on Polyvore.com