We'll be having a December bub also, my boys where jan & march and i remember it being quite warm with DS1 but not a huge amount with DS2. I am planning on getting some comfy onsies also (long and short... good old Melb weather ), i've bought some muslin and i found some bargin little white ribbed cardigans, i got one in 000, 00 & 0 because i know they'll be great to match with anything. I love the singlet suits also and have gotten a few of those. Maybe a few 'going out' outfits but otherwise onsies are so great for comfort. A couple of 0000 things for the hospital could be a good idea, i have had 7lb bubs and 000 swam on them in the hospital but it didn't take long for them to comfortably fit into them.

If you're going to have a baby shower it's also a good idea to not buy too much until after that. Bub won't need a whole lot in the beginning and you could find you end up with so much you'll begin to pack away things that bub never wore or wore once. It's sometimes a good idea to buy 00 and 0's as people tend to buy for a newborn, that way you are not too overloaded in the beginning but have a few things to bring out as bub grows.

Enjoy shopping and all the best for the remainder of your pregnancy