Vera Wang White Office unclassified dresses

My fiance and I were planning on getting married in a more traditional wedding. However, we decided to elope and the beautiful dress will not suit. It was never worn, still has the tags, and the box it came in. It is beaded at the top and flows down at the bottom (mermaid style). The color is ivory not pure white. I am a regular size 8 but the dress is a 10. It is in perfect condition, no signs of wear and tear. It retailed for close to $1600 but I am asking for $500 OBO. The dress is no longer for sale but I have attached a link for further details.