I would say they run a bit small. I have a size 3T for my child because that is not an option. 4 suits her perfectly. I got 5/6 for my very petite 5 year old. Appropriate but short. I wonder if they shrink a little after washing. I would order a size up for a 5 year old so it will last a little longer if I order again. Cute shirt, especially when Bluey's clothes are so limited right now.
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