Etsy is fairly decent however I personally prefer to do vintage shopping in person just in case it doesn’t fit/look right and to avoid disappointment when the package arrives!
Hi! Thanks! Proms and such, as I have found, the most difficult thing to shop for! I know exactly where you are coming from. I had my prom (formal as it is called in Australia) last year and I wore a Deyrolle Pour for Opening Ceremony fox print dress which certainly made me stand out from the crowd - not everyone’s cup of tea but nonetheless I loved it and that is what is important.
It’s difficult for me to suggest exact dresses and such because I don’t know your style but if you’re looking for something uber cool (in my books) I’d reccomend that you head on over to Opening Ceremony (http://www.openingceremony.us). They have wonderful dresses from fab designers but I will warn you, it at times can be very pricey. Here are a couple of my favourites featured on the online store at the moment;
Opening Ceremony Block Print Long Dress - $230.00
Peter Jensen Long Sleeveless Dress - $575.00
Opening Ceremony Memphis Stripe Dress - $310.00
In my opinion, these three dresses are quite reasonably priced especially for Opening Ceremony but if it will break the bank then I suggest you take a look at Zara, Modcloth, Asos and even Topshop. Better yet, if you know the type of dress you want and you’ve seen a certain fabric you like, go to a dress maker and get a custom made dress.
I hope I helped! Have a wonderful time at prom!