First of all these pajamas are great quality and they are my favorite brand. They are especially good if you have a tall, skinny child as the waist is quite thin and the legs are on the long side. However, I currently have three pairs in size 12 and they are all slightly different in size. One pair definitely has shorter arms, one has very long legs and the other is perfect for my son. They still fit, they're just not quite the same size. I've always ordered his regular size with no issues other than what I've mentioned about consistency, but he's definitely taller and slimmer.
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