Review on LittleSpring Toddler Full Zip Fleece Jacket Boys' Clothing by Adam Bates

I'm so confused! This is a wonderful jacket. Blue with purple inside is very pretty. My child won't take it off and it's at least 2-3 sizes too big for him. My kid wears a 5T or Kids XS so I ordered 6 which I think would be a bit roomy for layers. The tag says 140 which is a size 8. I want to replace but now I don't know what size to take! Will it be a great coat next fall or after?!