How do Celtic Wool Covers run?

I probably would. I started w/a sz 2 CWC, but Ian was already 4 or 5 months old and weighed around 14-15 pounds, and as I recall he still had plenty of room to grow in the medium. But take this with a grain of salt, b/c I never used a CWC on a newborn.

Anna, they aren't that stretchy I don't think. Mari wears a size 2 (now mediums) and it fits her chubby self very well. Approximately 12.5" thighs, 20 lbs.

Holli

Ours isn't stretchy, but gobs of snap settings on that thing.