Milord ut metal is not flexible, and even with pillows, it will make pressure on the borders.
Yes, and this is probably going to be a problem for some people. For my girlfriend, it works fine so long as the lining on the bra stays in place. I guess it highly depends upon anatomy and fit.
Milord And since your gf use it, may I ask the reason?
If we're both working from home, she wears it to remind both of us not to get distracted.