I agree with everything that's been said. Prewash clothes, Bonds Wondersuits are small, and allow for nappy leakage, milk dribbles, and vomiting. My DD had refulx, so I went through at least 2 wraps, 2 bodysuits and 2 singlets a day.

On singlets, I always went by the rule of thumb that "whtever I was wearing, plus one extra layer". So if I was wearing a t-shirt and a windcheater, bub would be in a singlet, wondersuit and a wrap. I read that somewhere, but can't remember where......maybe Miriam Stoppard's book.

As for socks/booties, if bubba is in a full bodysuit, their feet will be covered, and they will have a wrap, so I don't know if they are totally necessary.

Sizes, I agree with mainly 000, but some 0000. You would rather them be too big than too small.

And ytou will be so surprised with how much you will be given, so I wouldn't stress too much. One of the grandmas would LOVE to pop out and buy something if needed.

Good luck with the rest of the packing.