My 5 yo girl has been wearing a bathing suit top as a bra, so "no-one can see my boobs." I thought about buying her some undershirts instead. She has also been wearing multiple layers, tights under pants, 2 shirts. She won't wear a skirt, she doesn't want anyone to see her undies. She can't wear tights in the summer, so what should I do about the skirt-undie issue? BIkeshorts? Boys fitted boxers?