Ladies garment designed to be worn under a brassiere for the purpose of supporting and lifting the breasts and smoothing the appearance of the upper torso and arms, without interfering with the appearance of the brassiere under outerwear. The garment, made primarily from hosiery material, includes tapered sides fastening in front between the breasts with adjustable, releasable fasteners providing adjustable support and lift, and having sub-pectoral support portions disposed in the tapered sides and covering and supporting the lower lateral and bottom portions of the breasts and the sub-pectorals. Garment may additionally include: support portions on the underside of the sleeves at the triceps; and armpit panels made from breathable or moisture-wicking fabric allowing for ventilation and moisture-wicking. To minimize slippage and displacement, the garment is secured to the brassiere straps by cloth strips attached at the shoulder area of the garment.