This reminds me of when my son was young. He had a blue snowsuit that was a bit big for him but he loved it and he did look adorable in it. I figured he would grow into it by the following winter. Next winter the suit fit great except for the sleeves...they were too short. I used heavy yarn and knit some wrist cuffs and sewed them to the end of the sleeves sewing them into the lining. I amazed myself! They were perfect fit!