nutcracker - it depends on the size of your baby. most size 1's go up to 24 or 25 pounds. i didn't bother with any size 0's as I didn't start using them until she was about 2 or 3 montsh old. Trouble with cloth is that you can easily develop an addiction to all the gorgeous styles and designs.......!
am hoping not to get any size 2's at all as dd1 is only 30 lbs at nearly 4, so hope that dd2 is same but prob will buy lots to satisfy my own addictions!