Go Topless Day is a day when some women choose to remove their shirts or bras in public to raise awareness and support for the idea that women should have the same legal right as men to go topless in public. It's like a big party where some people show off their tummies and some people show off their chests, and they all have signs that say things like "equality for all bodies". However, it's important to remember that not everyone feels comfortable or safe being topless in public, and it's always important to respect people's choices about how they want to dress.