Help me identify this dress!

[diamondgirl4382]

Hi everyone! I haven't posted here in a while but remember how helpful you guys were for my own wedding. My sister is now engaged and has found a dress online that she likes, but on a seemingly sketchy website. Does anyone know the designer/style number of this dress so we can try to find it elsewhere? Thanks in advance!

http://www.dressale.com/stunning-princess-wedding-dress-with-the-fitted-bodice-in-black-and-white-p-2213.html