Ending today, Old Navy offers its Old Navy Women's Rib-Knit Swing Dress in Blue Stripe or White Stripe for $11.97. Coupon code "ENJOY" cuts that to $9.57. With $7 for shipping, that's $17 off list and the lowest total price we could find. It's available in petite, regular, and tall sizes XS to XXL, although not in all color/fit/size combinations.