From A-cup + -er.
A-cupper (plural A-cuppers)
- (informal, rare) Someone with A-cup breasts.
2003, Shecky's Girlshop Guide to NYC Shopping, page 90:Styles range from the D-Mure top for gals whose bra cups runneth over to the Flirt for A-cuppers.
2012, Rebecca Apsan, Lessons in Lingerie: Finding Your Perfect Shade of Seduction, page 53:A B-cup gal looks better wearing an underwire, and an A-cupper sometimes wants to enhance what she's got.
2015, Amy Andrews, Limbo:It was freezing in the tiled cubicle and her bare nipples (A-cuppers didn't have a lot of call for a bra) reacted predictably to the blast of cool air.
