A push-up bra has an envelope between the front panel and the rear panel of the bra cups, that receives a flexible pouch containing a body of lubricous, malleable material such as lightly cross-linked organo-polysiloxanes containing a dispersion of lightweight, finely-divided filler such as silica. The malleable material can be molded into a shape under and/or to either side of a breast to control the shape, amount of lift and the cleft between breasts and the lubricity of the siloxane resin prevents the filler from abrading the inner wall of the pouch.