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

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When did it become socially unacceptable not to wear a bra and how did that happen? - Quora

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When did it become socially unacceptable not to wear a bra and how did that happen? - Quora

What Happens When You Stop Wearing a Bra?

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Do you ever wish that bras were never invented, or that they were better designed? - Quora

Why You Don't Have to Wear a Bra