Ralph Lauren offers its Polo Ralph Lauren Women's Cotton Tee Dress in Naples Blue, Navy, or Red for $49. Coupon code "RLMEM15" cuts it to $34.30. With $5 for shipping (choose "Economy" shipping during checkout), that's $34 off list and the lowest price we could find. It's available in sizes XS to XL. Deal ends May 26.
Tommy Hilfiger via eBay offers its Tommy Hilfiger Women's Textured Knit Dress in Navy/White for $32.70 with free shipping. That's $37 off list and the lowest total price we could find. It's available in sizes 6 to 12.