Lauren Conrad suited up in the navy this week — and she wasn't the only one sporting the trend. Jessica Biel also donned a playful Erin Fetherston jumpsuit in the same deep sea hue. And why not? This is an easy silhouette, and the moody midnight color is a chic Summer alternate for your basic black. The key is to work the sexy angle to avoid looking like you're in uniform. Try a little ruffle à la Lauren, or go strapless and bare some skin — anchors away!