Braless in professional setting

Sa
Would you feel uncomfortable if a woman in a professional setting was not wearing a bra (but was wearing a shirt)? 
For example, if your female boss decided she would no longer wear bras even at work, would you be uncomfortable? 
Or if your waitress at a nice restaurant wasn't wearing a bra, how would you feel?
Added questions: are there certain factors that make going braless in a professional setting more or less appropriate, like breast size? Is this fair? Should women be forced to wear bras while working? 

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