Save 20% on a large selection of prom dresses at Macys.com through 3/26. Plus add the code MONEY at checkout to save an extra 15% on many styles. All eligible items are marked. Spend $50 or more and earn Macy's Money to use on a future purchase. Check out the pictured juniors' Say Yes to the Prom Sequined Gown, which drops from $159 to $126.99. And this juniors' Crystal Doll Embellished Dress drops from $59 to $34.99 to $29.74. Shipping starts at $9.95 or is free with $99. It's also free with any beauty purchase, so add something small to your cart for the biggest savings. Sales tax is charged in most states.