Wet Seal's got a contest going on right now where you build a Valentine outfit using at least 3 items from their online store, then tag the outfit "V-Day 2009" for your chance to win a $100 giftcard. What got me interested was the whole "build your outfit" part—I hadn't realized that Wet Seal has created their very own Polyvore-esque tool. (Maybe Forever 21 will be next!) It's actually pretty fun, even if you're limited to Wet Seal's hit-or-miss inventory.

Sign up for a free account to save your looks, post them to a virtual "runway" and rate other looks by fellow fashionistas. One downside is that you can't resize products using the outfit building tool, but other than that, the interface works better than expected. The coolest feature is that it automatically calculates the total cost of your looks, and if you love your creation, you can add the entire outfit to your shopping bag. Now that's marketing at its best!

Start stylin' for yourself (and enter the contest!) at WetSeal.com.