It's kind of weird how many vintage pin up pictures show women en pointe. I guess once you have dressed up as a "sexy pilgrim" any chance of the image making sense has pretty much gone out the window. So... armed pilgrim turkey ballet. Why not?
I can only assume that:
1) Quite a few of the nice looking pin up models had ballet training, and
2) Once 5-8 inch heels are a common prop that only really leaves one more place to go.