We tried it on her for size and while it is very big, we rolled up the sleeve cuff once and it seems perfect with her fingers just sticking out. I went back and forth between this and the old style jacket, but glad we went with this one with the cuff. It will be nice to have when she's bigger to keep out snow, and it's actually really cute rolled up with the cuff material on the outside! The jacket is quite long right now, but will be nice to keep her warm. I was between this size and the 6-12mo, but happy we went with this one so she can wear it for at least a couple years. We plan to have future children wear it as well, and then pass it on to their kids too!
The material is nice and light, but I know it will be super warm in the winter with some nice wool layers underneath. The buttons have just the right amount of resistance too, so I don't foresee having trouble putting it on/taking it off frequently. Love this coat!!