When did it become socially unacceptable not to wear a bra and how

Why You Don't Have to Wear a Bra

How did the word 'brassiere' change to 'bra'? What is the history behind this change? - Quora

Before clothes were invented what was it that made being naked out in public unacceptable to society? Or was it always considered unacceptable? - Quora

Scientists Explain Why Women Should Stop Wearing Bras

Why is it socially acceptable for all girls to wear a bra? - Quora

Before clothes were invented what was it that made being naked out in public unacceptable to society? Or was it always considered unacceptable? - Quora

Tight Bra: Signs of Tight Bra, Ways to Fix Tight Bras, and More

How long have bras been a thing? Did they exist in the 1500s? - Quora

Not Wearing Bras Discounts Collection

3 Ways to Dress With No Bra - wikiHow

Are sports bras bad for you?

Why is it socially unacceptable for a woman to not wear a bra in public? - Quora