That is such a cute little diaper Spark. I have no idea what the foot to get. Corby was 8lbs 13ozs and Hadley was a tiny pixie a 4lbs 15ozs-but she also had some other issues going on. None of the diapers I had fit her. I expected another one at least as big as Corby if not bigger so I had no tiny, tiny diapers. So far Phive looks like he/she is going to follow in Corby's footsteps. I had my 31 week appt the other day and I was measuring 2 weeks ahead. We'll see though, it could've been bogus measurment. Anyway, I have a large variety of newborn and small this time around just in case.