rachel pally one sleeve dress in amethystThis week, we're looking at party dresses -- whether you're hosting a cocktail party at home, heading out for a wild night of dancing, or waltzing into a black-tie ball with your beau.

Yes, we realize you probably overdid the eating over the weekend, Christmas Eve, and Christmas day. Don't worry, drink a lot of water to flush out your system, and you'll be able to slip into this Rachel Pally One Sleeve Dress for that comfortably (somewhat) casual cocktail party. The dress is made of jersey, so it's forgiving, but of course, that means it will also give way to every curve and bump on your body. Wear amethyst if you were nice at the dinner table, and black if you were naughty.

Available from Shopbop for $198.