Abstract: A method of breath-powered sustained pressure induced breast tissue expansion by way of sucking air through silicone tubes attached to semi-rigid plastic domes cushioned by sticky silicone padding and clamping or locking the air pressure inside the domes to create tension on the breasts to enlarge them over a period of at least ten weeks of wear for ten hours per day or night, further including optional improved domes with silicone padding extensions on the outer edges of the domes below the armpits and hooks in back like a bra to create an improved seal to keep the air pressure in while wearer moves about in her daily activities.