I have a proposal, because I am sick and tired of looking up the huge_areola tag and finding nothing but small tiny areola.

Areola:0-15% of breast surface area(basic areola sizes here.)

Big_Areola:16-40% of breast surface area(nearing half the sphere of the breast)

Huge_Areola:41-60% of breast surface area(slightly less to slightly more than half the sphere of the breast)

Hyper_Areola:61-100% of breast surface area (more than half to the whole breast because hyper)