Girls' overalls. They exist, and in fact, they have existed for a very long time! Girls' overalls have been a part of female life since antiquity, and only today are we uncovering this knowledge.
When the women of ancient Peru discovered overalls, they knew they had to keep them secret. Peru of course was ahead of its time in terms of garments, what with their high altitude settlements being perfect for stringing clotheslines. The chosen warrior of the overalls was sent to spread word of their invention around the Earth.
Overalls were important, and it was vital the men did not know of them. Why do you think this hidden history of overalls is so hidden? Men are the ones writing the history books.
Women dressed incredibly conservatively centuries ago, and this was not without reason. The thick layers of clothing helped conceal the women's overalls without suspicion.