David's Bridal 7T9218 Lace unclassified dresses

I bought the dress for my wedding in 2008. I can't remember if it's a size 4 or 6--it's preserved in a box and if I open the box, I can't seal it again. Things ended up not working out with the man I bought the dress for, but we split on good terms, so there's no bad juju with the dress. I am getting married again in Sept 2015 and don't want to keep hanging on to this dress. It's beautiful--I wore it for the reception as well. I also have a slip, tiara, bra and veil I will include in the $600 price. The dress is Champagne colored and not white