hey ,
i had a planned c section with my son and what i would recommend is

pj's that open at the front
alot of maternity pads, even tho ur having a c section u bleed alot
underwear that sit above ur cut(way above lol)
those maternity bra insert things to help with milk leakage lol
and just loose fitting comfy clothes

for bub yeah well my son had to throw up on everything i put on him so i think its a smart idea to take a couple lol

best of luck hun i hope that helped