Why we love it: Especially for Summer, evening dresses in white feel fresh and ultra elegant. Just look to Margot Robbie in a totally chic, totally sexy custom Calvin Klein gown. Just be sure to steer clear of any overtly lacy detailing to keep the look from feeling too bridal — and please don't wear this one to your best friend's wedding.
Best for: All body types. Just look to a dressed-up silhouette that suits you best. Athletic build like Margot? Opt for a dress that skims your curves and shows a little skin. If you're looking to conceal a little more, look for styles that float away from the body or draw attention to your favorite areas via a lower neckline or open back.