Abstract: A backless strapless bra has two cups connected with each other. Each cup has an inner surface, a cup top, a cup bottom, an inner side, and an outer side. The inner surfaces are sticky. Two supporting pieces are connected with the cups and are each respectively located at the cup bottoms of the cups. Each supporting piece is flexible and has an inner surface that is sticky. In use, the supporting pieces are first adhered to the bottoms of the breasts of the user to fix the position of the bra. The cups are adhered to the breasts gradually to cover the breasts. The supporting pieces provide a supporting effect of the breasts.

Abstract: A backless strapless bra has two cup-shaped breast boosting sections. Each breast boosting section has an arcuate cross section and a free side. The free sides of the breast boosting sections are respectively located at two opposite sides of the backless strapless bra. Each free side has three arc areas. The three arc areas are located respectively at a top, a middle, and a bottom of the free side of the breast boosting section to squeeze and cover different sections of a rim of a breast.

Abstract: An invisible bra has two breast boosting sections, two central concave openings and two wing sections. Each breast boosting section has an arcuate cross section, a convex top edge and a convex bottom edge. The central concave openings are respectively located below and above where the breast boosting sections are connected with each other. The wing sections are respectively and integrally connected with the breast boosting sections and are respectively located at two opposite sides of the invisible bra. Each wing section has a top section, a free side and a wrinkle-proof concave. The wrinkle-proof concaves can effectively reduce wrinkles and make the invisible bra well attached to the breasts.

Abstract: An invisible bra has two breast boosting sections, two central concave openings and two wing sections. Each breast boosting section has an arcuate cross section, a convex top edge and a convex bottom edge. The central concave openings are respectively located below and above where the breast boosting sections are connected with each other. The wing sections are respectively and integrally connected with the breast boosting sections and are respectively located at two opposite sides of the invisible bra. Each wing section has a top section, a free side and a wrinkle-proof concave. The wrinkle-proof concaves can effectively reduce wrinkles and make the invisible bra well attached to the breasts.