What dress is sexier? (guys please)?

this is for a party, what dress looks sexier? here they are - http://www.boohoo.com/evening-dresses/sophia-crinkle-bow-detail-bodycon-one-shoulder-dress/invt/azz73461 (in white) or http://www.asos.com/Asos/Asos-Bodycon-Dress-With-Cut-Out-Neck/Prod/pgeproduct.aspx?iid=1586711&SearchQuery=bodycon&Rf900=1465&Rf-800=-1,50.000&Rf-300=1944&sh=0&pge=2&pgesize=20&sort=-1&clr=Cream (in black) thanks.