A sundress also called a summer dress is an casual or easygoing dress calculated to be worn in cosy weather, commonly in a lightweight material, most consistently cotton, and usually loose-fitting. It is commonly a bodice design sleeveless dress, commonly with a broad neckline and thin shoulder thong, and may be backless. A sundress is commonly worn without a patterning top and is not generally worn over a blouse, sweater, shirt, or with even leggings.

Sundresses apprehend hot summer afternoons enjoying the outside with friends or a close book. They may be revealing and have thin straps too, they come with a variety of entanglement in the front or the back. Entanglement can include buttons, zippers, bows, or straightforwardly none at all. The material and cut of the sundress frequently allow for it to be clearly pulled over the head for wearing.