In the 1970s, a Barbie doll was released that could grow breasts!
This doll, Growing Up Skipper, was released in 1975 amid a lot of controversy. This doll was Barbie?s younger sister, who could go through puberty by rotating her left arm (and revert by rotating it back). In addition to having her breasts get larger, Skipper would get a little taller and her waist would shrink. This line of Skipper dolls discontinued in 1977.