Online Dresses

Ok, I've been reading post after post on website after website and I'm feeling a bit overwhelmed! I've found some great reviews of places, unfortuantely, many of these posts are older and the sites no longer exist. Could anyone recommend a site or ebay store you've used recently that offered quality for a great price? I'm going to be wearing my dress for less than 12 hours, I just can't justify spending lots of money! To give you and idea of our budget, we're looking at a wedding for 300 guests for under $7000. I'm hoping to spend less than $500 on my entire outfit, including alterations and veil. Thank you in advance!

I recently tried on a beautiful Martina Liana gown, but it was way out of my budget. I found the same dress on simondress.com.