Ending today, Lands' End offers its Lands' End Women's Knit Scoop Back T-Shirt Dress in Sweet Lilac (pictured), Lemon Shine, or Pink Flamingo for $8.99. Apply coupon code "SNOWMAN" and pin no. "1714" to drop the price to $5.39. With $8 for shipping, that's $40 off list price and the lowest total price we could find. It's available in S and M in regular and petite sizes, although not in all size/color combinations.
Orders placed by today are guaranteed to arrive by Christmas.