Just today I bought a pack of 5 'full briefs' from Marks & Spencer cos I had a 20% off voucher. I will take these into hospital with me along with a pack of disposals that my friend gave me (unused just to be clear lol). My only dilemma was the size to buy. I was a size 12 before I was pregnant so I just went with that, have no idea how much my bump will go down after birth. My mum said she'll be on hand to run out and buy me bigger pants if needs be lol, bless my mummy! At the mo I wear mothercare under bump ones and they are comfy x