膨乳
When a character's [[breasts]] are shown to be growing or implied to have grown from a smaller to a much larger size.

Not to be confused with [[alternate breast size]], which is when the breasts are simply drawn a different size, with no implication of the breasts actively expanding in size.

h4. Examples

* !post #7497650
* !post #6982836

h4. See also

* [[alternate breast size]]
* [[ass expansion]]
* [[breast reduction]]
* [[Tag Group:Breasts Tags]]
breast expansion