Ann Taylor LOFT takes an extra 40% off sale items. (Discount automatically applies in cart.) Shipping is a flat $8.95, or get free shipping when you spend $125 or more.
A best bet is the Ann Taylor Loft Women's Petite Floral Linen Cotton Dress in Natural Flax for $50.93 plus $8.95 for shipping. That's $39 off and the lowest total price we could find. It comes in regular and petite sizes 0 to 18, although not in all size/style combinations.