What type of underwear do I buy post partum

What type is the best most comfortable type of underwear last month of pregnancy and first three months after having the baby and I wanted to know both for vaginal and c section because I'm not sure until next month if I'm having a section or natural. And from the cut it seams regular underwear would get in the way. I'm just wanting a comfy pair of underwear lol :) where to buy etc.