There are several stores that are running sales for Memorial Day. Clothes Mentor in Fargo is having their first ever Dress Dash. On Monday, May 26 if you buy 1 dress at regular price you can purchase a second dress of equal or less value for a penny.
The store is located at 2551 45th St SW, Fargo and is open from 10 am to 8 pm.
I have only heard about the Fargo store, so you may want to check with your local stores to see if they are running a sale.