My daughter is almost 3 months old and wearing 3-6 month clothing, I ordered the 3-12 months size. These socks fit perfect right now but in a few weeks they will be too small. They are listed as 3-12 months. I am pretty sure she doesn't have feet the size of even a 6 month old yet. Very cute socks and they match a lot of Carter's Brand outfits. I was just hoping they would fit her longer. I like the material.
I do have a neat trick I use with socks on my 3 month old though I can share. I had some of the very thin, clear elastic bands for your hair and tried putting them around my daughters ankles, over the socks. It keeps her socks on and does not cut circulation and you cannot see them. Just sayin.....