This article relies largely or entirely on a single source. (July 2013)
A sundress is a dress intended to be worn in warm weather. Typically, it is an informal or casual dress in a lightweight fabric, most commonly cotton, and usually loose-fitting. It is a sleeveless dress, typically with a wide neckline and thin shoulder straps. A sundress is typically worn without a layering top and is not typically worn over a blouse, sweater or t-shirt.
The sundress provides a feminine look that is more comfortable than a skirt and blouse or another sort of dress.