This dress is from the Allure Exclusive Bridal Collection (which basically means they didn't make that many of them and they weren't distributed everywhere--- aka unique). It has never been worn or altered and is in pristine and perfect condition. It has only been out of the bag twice and there is no yellowing, staining, etc. It's a completely new, never been worn dress.
This dress is also a slip dress, meaning it has two layers: the lace layer, and the silky "slip" layer, which can be worn separately for a completely different look. It also features a scalloped lace train. If you would like to see closer detail shots, just let me know and I can provide them!
Also, I am 5'9 (modeling the dress without shoes) if that helps you determine dress length.