I was told to take a separate little ziplock "theater" bag with 1nappy, 1 vest, 1 sleepsuit, 1 wooly hat and mitts (apparently theater really can be that cold!!), and a cardigan. (I've put a newborn and 0-3 vest and sleepsuit).
Then I've got an overnight bag for baby - with 8nappies, wipes, sacks, teddy, 4 sleepsuits and vests in both newborn and 0-3, cotton hats x2, scratch mitts x2, muslin x1.
A bag for me with all the usual toiletries, 10x giant m&s granny pants in two sizes too big, just to make sure they are no where near scar, socks x2, nursing bras x2, 4breast pads (already leaking intermittently), 10x maternity pads, carrier bags for dirty laundry, 2-3 pairs of joggers & t-shirts (i dont like nighties or PJs). I'm undecided between crocs and slippers. Also taking peppermint capsules and Rennie deflatine (heard the trapped wind after csection is agony), snacks and drinks (last time I couldn't even get a plastic/polystyrene cup off them to fill myself, never mind a jug of water), phone and charger, pen and note pad. Oh and of course my maternity notes will be added.
I've then done a carrier bag to be left in car, alongside car seat and blanket which has more sleepsuits and vests, 16 nappies split into little sandwhich bags of 8 to make it easy for DH to bring in 24hrs worth at a time, 20x maternity pads and 2 more muslins.
Tbh I've found a normal sized holdall massive for what im taking (even though what I'm taking sounds a lot). I'm taking a small change bag (the boots free one) for baby and a backpack for me.