See 8 Fashion Designers in Their Signature Uniforms

As the maker of the wrap dress, von Furstenberg knows a thing or two about women's bodies. She, herself, prefers a printed tunic dress, which she calls a "petite valise." “I wanted something that was easy, that I could wear anywhere, and, you know, it is easy to pack," she told us. "It doesn’t wrinkle, and it makes it easy to get dressed, so it works like a uniform.”

Herrera is rarely seen without her white shirt. "Fashion is supposed to be for the everyday,” she said. “I have worn the white shirt since I was very young.” Herrera even manages to take her favorite design from day to night. “It doesn’t always look like a white shirt even though it is,” she said. “With trouser or a short skirt it can be worn for day and then later with evening jewels and a ball skirt for night."

Beckham knows the power of tailoring and is often seen in menswear-inspired pieces, like a knee-length coat and smart trousers. Ladylike pumps and oversize sunglasses usually complete the look. 

As an advocate of seven easy pieces, Karan knows the importance of editing one's wardrobe. For her part, she is usually seen in an all-black uniform of a blouse, edgy pants, tough boots, and a statement necklace. 

When turning up the glamour for red carpet events, Wang is often seen in long sleeveless black gowns with some sort of fabric detail, like pleats. 

Johnson loves wacky, playful designs on the runway, but for her everyday uniform, she likes to incorporate black-and-white stripes in the form of dresses, leggings, and jumpsuits. 

Minkoff relies on old standbys, like a leather motorcyle jacket, a printed top, jeans, and statement heels. 

Rowley loves herself a statement piece in the form of feathery knee-length skirts and colorful toppers.