Polyvore

Polyvore is a ever-growing user-generated data base of fashion items, including accessories and furniture, that you can upload, mix and match. The interface allows you to re-size items and layer them, creating your own unique ‘looks’ that you can save as sets. The items are poached from other sites, but each one is carefully labeled, and the source identified (just in case you want to recreate your wardrobe ideas IRL).