Well, I think it's very useful thing, before change something in your appearance, you can try on the dummy, for example, to change the colour of hair, or something like this.
And then decide if it suits you or not .
It is stupid and cruel to put one princess's face with another's body.
It's entirely harmless and a bit of light amusement for those that enjoy the clothing and accessories of female royals and like to make suggestions. Theres nothing "cruel" about it whatsoever. Infact, that comment is entirely nonsensical.
"Dressing is a way of life" - Monsieur Saint Laurent