1. Maternity underwear
While wearing normal underwear is completely acceptable during pregnancy, choosing the right underwear can make a huge difference. Many women prefer oversized underwear to pull up over their bump. Alternatively you can buy specialist maternity underwear which is made from a light-weight and stretchable fabric. It will sit nicely just under your bump and won't dig into the skin.
Up top, your boobs are likely to grow at least one cup size very early on in your pregnancy so it is a good idea to invest in a new bra. Go for one without an under-wire for comfort and allow for growth.