Slip (clothing)

A modern Vanity Fair full slip
Design of a slip in 1916 by the House of Worth.
A modern-day half slip

A slip is a woman's undergarment worn beneath a dress or skirt. A full slip hangs from the shoulders, usually by means of narrow straps, and extends from the breast to the fashionable skirt length. A half slip (or waist slip) hangs from the waist. The word petticoat may also be used for half slips.