That's an excellent idea, but the cosplay I'm doing does have cups for the chest. It's closer to a male breast plate, if that makes sense. But I definitely will keep this in mind.
Thanks! I did some research and craft foam sounded the most promising. The videos seem extremely helpful.
Cookies are an anytime food.
Mikuru Asahina (Japan 2011)
Fiona - Adventure Time (Fanime 2014)
Lust - FMA (Norcal Cosplay gathering 2014/ Fanime 2015)
Mikuru Asahina episode 00 (Fanime/ Japantown Anime & Cosplay Festival 2015)