shortstack
Literally "short" + "stacked" (having large/huge breasts and/or wide hips). Usually used to refer to an adult female specimen of a fictional race that is shorter than humans, but may also refer to humans of unusual proportions. Differs from oppai loli in that the shortstack is clearly an adult despite their short stature, while an oppai loli appears childlike apart from the curves.
Consider using pear shaped figure when bust is less emphasized, as there is less stacking.