Do I need to wear a bra while breastfeeding?

Rachael

I haven’t worn one at all in about 5 years because I have chronic inflammation in my ribcage and spine and wearing one makes things super painful for me unfortunately. Ive tried multiple different bras and none seem to be comfortable so I just gave up. Anyway, I was wondering if there’s any reason why one would be necessary for nursing and if I need to invest in nursing bras or if I could just wear tank tops instead?