There are certain shoe styles every girl should have in her arsenal: classic black pumps, sleek rain boots, and skirt-worthy sneakers, to name just a few. Missing one? Two? Maybe six? Well, you're in luck. We took to the virtual shopping world and found 10 killer pairs that'll round out your footwear collection in a snap, and they can be yours for a song. That's right, each of these steppers rings in under $50. You know, because we're all still feeling the holiday burn on our bank accounts, right?