Look through the glass window of any clothes shop and you will see a model which looks like a person wearing the latest fashions. It's a mannequin of course and some mannequins are very realistic. They have hair and their faces have eyes, noses and mouths - some even have freckles. Other mannequins don't have details on their faces and they are often bald, with no hair at all.
Today mannequins are usually made of fibreglass - a mixture of glass and plastic. But in the mid-1800s, they were often made of wax - which was a problem when they got hot under lights because they changed shape and melted! They didn't look like people then!