A sundress is an informal or casual dress intended to be worn in warm weather, typically in a lightweight fabric, most commonly cotton, and usually loose-fitting. It is commonly a bodice style, sleeveless dress, typically with a wide neckline and thin shoulder straps, and may be backless. A sundress is typically worn without a layering top and is not usually worn over a blouse, sweater or t-shirt, nor with leggings.
The sundress provides a feminine look that is more comfortable than a skirt and blouse or another sort of dress.
Sundresses can be of any neckline and hemline, ranging from mini to full length. It is typically sleeveless and collarless with a wide neckline and thin shoulder straps.
Sundresses can use a variety of closure types, including back zippers, side zippers, front buttons, back buttons, back ties, pullover or other closure styles. They may also be without any closures or fasteners and put on over the head or slipped on by pulling up from below.