Long long time back when I was young as a kid, there's no Internet, no 2ch, no Japanese galgames and everything was in the old style as you see in those movies. I used to dislike the old white beard guy and imagine Santa Claus was a girl with the same costume, which is much prettier. Since there was no one draw a Santa Claus in such a way on those past lengthy days, I could only think of it in my brain. Until the internet and anime culture occupated the whole world in 21st centry, we have tons of pictures of girls wearing Christmas costume every year, and nearly forgot that Santa Claus is origially an old guy.