I've been told to need mat clothes for a while after, I have a pair of these really loose fitting trousers that I plan on wearing home from the hospital and I'm not expecting to be back in my bigger regular clothes for a couple of weeks at least.
For nursing in hospital, I have a (black) shirt style nightie, that opens at the front. That way I can pop a couple of buttons and feed without having to strip off. I think you can get special nursing nighties but I just got mine from primark. I also have two large regular nighties to labour in. I'll take some thick socks and slippers too.
Other stuff for me:
A few big pairs of black pants and some disposable pants.
A pack of maternity pads and breast pads
Nipple cream
Straws and a little bottle of squash
A bottle of cleanser, i will take some moisturiser and possibly mascara.
Phone charger and snacks
Black towel
Stuff for baby
4 vests and 4 long sleeve baby grows
2 hats
A big outdoor sleep suit
Cotton wool
Water wipes
Mini tub of sudocreme
A pack of nappies
Will get some ready made formula
A couple of muslins
DH will take a change of clothes and phone charger.
I think there's stuff I've missed off, doing this from memory because I can't be bothered to walk upstairs!