Body Expansion fans want to see bodies grow rapidly and impossibly... breasts burst out of bras, butts rip clothes, bellies expand until the person has transformed into a ball. Many BE fans trace their interest to the original Charlie and the Chocolate Factory movie, and Violet Beauregarde's magica/terrifying transformation into a bluebery remains their go-to image. For some, it's a kind of inflation. Elements of peril, embarrassment, and shame can be involved. Some fans purchase special inflatable costumes to epxerience the pressure and excitement.