Has anyone ever seen this dress style OUT of bridal lines?

bespalk

Hello all! 

So, I'm going to be a BM in May, and the bride is letting us pick our own dresses with a few specifications (must be spaghetti strap or strapless, must be cocktail or tea length, must be in a blue or purple color family, must be sweetheart neckline.)  When I was shopping for my wedding dress, I ended up seeing http://allurebridals.com/Store_ProductDetail.aspx?pid=31eDc9264920gIB35cD7 way after I bought my dress, and it was... exactly what I had wanted, but I had the dress already, and couldn't justify a rehearsal dress that was that expensive. So, I'm casting a line out to see if anyone has seen anything similar out of a bridal line (formal or bridesmaid dresses) from a company that does plus side digs. I realize it's a long shot, but it was worth asking  

LaBellaBarv66

Here's some dresses to take a look at:

http://www.wtoo.com/Product/WtooDresses/436/

http://www.wtoo.com/Product/WtooDresses/431/

http://www.wtoo.com/Product/WtooDresses/956/

http://www.alfredangelo.com/Collections/Bridesmaids/7180S/?pg=1

http://www.alfredangelo.com/Collections/Bridesmaids/8603/?pg=3

http://www.billlevkoff.com/style/bridesmaid-dress/327

Those were some that I think have certain details like the dress but still in the specifications.

I guess a question would be, what aspects of that dress are you looking for in a bridesmaid dress?