#21: Polyvore
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For any of you hoping to one day be an editor at a big fashion magazine, Polyvore is perfect practice at least where photo collages are concerned. Choose from their enormous library of clothes, makeup, shoes and accessories to create unique styles all your own. This is great shopping therapy without spending a cent, and it's also great for getting an idea of what you DO want to buy when it's actually time to go to the mall. Keep up with the latest trends, mix and match countless looks, and then share them with the world!