Here is a vintage play set called Dolly Pops By Knickerbocker Toy in 1979. This is the Dress Shop. The flat plastic doll is 3" and she has 5 snap on dresses to change her to. This is in used condition, with some wear to the paint. It is displayed in a plastic room display 8" X 9 1/2" X 2" and if you collected all the different ones you could snap the rooms together.  Please see photos and email any questions. Thanks!