breast pads
To those self-conscious of their flat chest, breast pads will give a boost to your cup size at the cost of being very tacky. Mind, these aren't the silicone implants that are installed through surgery, these are just soft, jell filled packs to be inserted into a bra.
Frequent users include Izayoi Sakuya, Ryuujou, Yumi, Taihou, Kisaragi Chihaya, Yuubari, and possibly Yamato.
This tag has been aliased to breast_padding (learn more).