K.G.
Very normal behavior. I go through this every change of season from winter to summer. Kids get used to having their arms and legs covered then we put short pants and short sleeves on them and it feels funny to them. My son tugs on his clothes for the first couple of weeks when I change seasonal clothes. He does the same thing when I roll up his sleeves to wash his hands or for him to eat. Just let the sleeves get dirty. It isn't worth the struggle. Don't sweat the small stuff!!