A garment and brassiere accessory that is substantially triangular in shape having attachment straps extending outward from upper corners of the undergarment that may be looped around shoulder straps of a brassiere. In addition, a lower corner may be looped around a center portion of the brassiere. An upper band of preferably elastomeric material located along an upper edge of the undergarment keeps the undergarment securely against a woman's chest while being worn. The undergarment is preferably constructed from two layers of material, an outer layer and an inner layer so that the outer layer hides any wrinkles or indentations caused by the stress of the lower corner pulling on the inner layer while the undergarment is being worn. Additional features include extension straps that allow a user to adapt the undergarment to a larger chest and/or brassiere size or to wear the undergarment without a brassiere and detachable jewelry.