Popover is a type of dress originally designed by Claire McCardell in 1942. The outfit type became the basis for a variety of wrap-around dresses.
A versatile wrap dress, it could be used as a bathing suit cover-up, housedress, dressing gown, or party dress. It is iconic of the American Look (fashion movement) and could be worn for to entertain, to a party, or to cover up a swimsuit.
References
Popover (dress) Wikipedia(Text) CC BY-SA