Okay kiddo, décolletage is a fancy word that grown-ups use to talk about the top part of a lady's chest or neck that shows off a bit of skin. Think about when you wear a dress that shows your shoulders or a shirt that has a V-neck, the area just below your neck and above your chest is called the décolletage. Sometimes grown-ups use fancy creams or lotions to make the décolletage look nice and smooth, or they wear pretty necklaces to make it look even fancier. It's a classic look that has been popular for a very long time, and some people think it looks very elegant and beautiful. But remember, it's important to always respect people's personal choices and understand that everyone has their own preferences for how they want to dress and show their bodies.