Blue Nile takes up to 30% off a selection of jewelry via coupon code "MOM2015" as part of its Mother's Day Sale. Plus, all orders receive free shipping. Deal ends May 8. Some best bets, with prices after coupon:
The Limited offers its The Limited Women's Chiffon Skirt Dress in Green, Red, or Mint for $39.97 plus $8.95 for shipping. That's $40 off list and tied with last week's mention as the lowest total price we could find. It's available in petite sizes XXS to L, and regular and tall sizes XS to XL, although not in all size/color combinations.