A chemise is a piece of clothing that is like a long, loose-fitting shirt or dress. It is often made out of a lightweight and soft material like cotton or silk, and it is worn underneath other clothes, like a gown or dress.
Think of it like a cozy, comfortable layer that you wear under your fancier clothes to keep them clean and in good condition. It's like wearing a pajama top, but more fashionable and stylish.
The word "chemise" comes from the French language, and it has been around for a very long time - even before you were born! Women have been wearing chemises since the Middle Ages, and they are still popular today among those who want to add a touch of elegance to their wardrobe.