A-cups

 was a J-Pop idol unit that was active in 1988. They were a subgroup of the larger All Nighters (オールナイターズ) all-female group of the co-hosts/MCs of the Fuji TV program, All Night Fuji. The two members were selected because they had the smallest breast sizes of the ensemble cast at the time.

The group released one single and disbanded shortly after.

Members

 * Suwa Yuka (諏訪有香)
 * Hiroishi Keiko (広石恵子)

Singles

 * 1) [1988.10.xx] Bathroom Densetsu (バスルーム伝説) with All nighters