Women’s Dresses & Jumpsuits Theory dresses and jumpsuits are designed to make getting dressed as easy as possible—just put one on and go. From our classic shift dresses, shirt dresses, and crepe jumpsuits to our lightweight spring dresses, sundresses, cocktail dresses, occasion dresses, and maxi dresses, Theory styles are designed to go from day to night, work to play to date night to weddings, with ease, no matter the season. Every Theory dress and jumpsuit, whether it’s a work-appropriate blazer dress or a knotted dress for the weekend, is impeccably tailored and fashioned from the highest quality fabrics. Our simple but refined cuts are interpreted in a wide variety of materials, including suede dresses, leather dresses, linen dresses, wool dresses, silk dresses, and silk jumpsuits. With their timeless lines and elegant, understated details, Theory dresses and jumpsuits are the ideal foundation for a sophisticated wardrobe.