A couple of the Daily Deals at Target.com today are for dresses and we do have a $2 Off code of TGTF8NVM to use at checkout. There are styles for as low as $13, so $11 after code and daily deals always ship FREE too. Most coupon codes can only be used once and it will only apply to one item in your order, but let me know if you find out differently.
Remember, you can go through ShopatHome as they offering 3% cash back on Target.com purchases. Plus if you are new to ShopAtHome you also get a $5 bonus!
You can also go through EBATES for 3% Cash Back on Target.com purchases (plus all new members get a $5 bonus). Or go through SWAGBUCKS to get 2 Swagbucks for every $1 spent. Also, if you use your Target REDcard online (credit card only) you will also get an additional 5% Off.