I'd recommend buying shoes, not clothes, on amazon. The shoes are better organized and easier to sort through. Try to always buy though Amazon, rather than 3rd party, to get free returns.

I'm not getting a very good idea of what you're looking for, but here's a starting point (the link looks crazy because I started a search for you):

http://www.amazon.com/s/ref=sr_nr_n_0?rh=n%3A672123011%2Cn%3A%21679448011%2Cn%3A%21679496011%2Cn%3A5609963011%2Cn%3A5653172011%2Cp_n_size_two_browse-vebin%3A5391077011%2Cn%3A5609965011&bbn=5653172011&ie=UTF8&qid=1391608342&rnid=5653172011

I found one heart cut-out dress, but I am pretty sure it would be coming from China and wouldn't get to you before V-Day. You can tell by looking at the detailed shipping information (17-28 days). Avoid this type of seller if you want your items in a hurry:

http://www.amazon.com/PrettyGuide-Woman-Strap-Cocktail-Pleated/dp/B00H792H30/ref=sr_1_2?s=apparel&ie=UTF8&qid=1391609341&sr=1-2