I'm embarassed to say that in addition to the thread above, I had another thread called "how long did your baby stay in sz 2 diapers?" or something like that. Annie, we are both a little loca in the diaper department. Here's the link to that thread:
http://windsorpeak.com/vbulletin/sho...d.php?t=368218
My DD2 is just 13 lbs, but the sz 2 Swaddlers Sensitive fit her great. We have one unopened mega box (152) and I don't think I want to stock up on more sz 2s at this point. If you buy Swaddlers (which we love love love) make sure you get the Sensitives, without Drymax. Amazon.com sells these.
After she is done with this box of sz 2s, which will probably be in a month, I am going to try the Nature Babycare sz 3s, which are supposed to run small. You could try 7th Gen sz 3, since they are pretty much a whole size smaller than Swaddlers. Then we plan to try Earth's Best sz 3. If neither of those works, we'll probably go to Pampers Baby Dry or Kirklands.