This might be a really silly question, but is there any reason why you can't just carry on wearing the knickers that you'd been wearing right through your pregnancy in the days after delivery? Mine are just normal bikini ones which sit under the bump. Everyone seems to advise buying new knickers especially for after giving birth, but I'd rather get my old ones covered in blood and then throw them out and buy lovely new nice ones than buy granny pants especially for the post-natal period. I suppose that if you have a c-section bikini style knickers wouldn't work, but if you have a normal vaginal delivery, is it really necessary to spend money on such dismal pants?