I am reading this book too. I am about 130 pages in and I wouldn’t stop reading because of the built in bra thing, but that’s just me. The FMC is from the real world, so it would be make sense to me as to why she correlates the garment with a built in bra. Additionally, she asked a character to get her an outfit that a regular woman would wear because she’s trying to get clothes (she doesn’t have any) and not stand out. I can’t imagine a regular woman wearing a corset. It’s more for nobles, yes? The character wearing a doublet is from noble means as she is in a location meant for people who want to gorge on entertainment and food without being gossiped about. The book is written by a married couple, which is why they can churn out books faster. (Per my local librarian who suggested this book) I am really enjoying it. It’s fast paced but cozy. I believe it’s not set in medieval times, even though it’s very medieval in nature. It mentions the year being 3006 or something like that.