Valentine's Day often gets lambasted for being invented by greeting-card companies and purveyors of all things heart-shaped. Maybe so. But there is an upside to Cupid's high holy day: We have yet another excuse to don a great party dress. And now, in our monthly installment of Mass Attack, where we scour mass retailers for their most fashionable finds, we've rounded up the best frocks for you to ring in V-Day, all under a Benji. So date or no date, you'll be able to score something shiny and new, and still have enough money left over to indulge in a couple of those gargantuan Hershey Kisses. And isn't that the best part anyway?