We all have a Twin

Once upon a time there was a beautiful princess who was perfect in every way.
Once upon the same time there was an ugly princess who needed some work.
These two princesses lived in two completely different far, far away kingdoms that had little in common. However these two princesses were inexplicably linked from birth. When one smiled the other cried. When one lost five pounds the other gained five pounds. When one smelled good the other smelled bad. This was the way of things for seventy-five years.
At seventy-five the beautiful princess was, as expected, gorgeous, happy, and surprisingly pleasant smelling.
The ugly princess was in a worse state. She was nearly three-hundred pounds, always crabby, and constantly emitting an odor conjuring the image of two dead skunks embracing a heated dumpster of spoiled cheese. The ugly princess had, understandably, had enough of her downward spiral of a life. She summoned her court magician who was a lecherous old man with problems of his own. She commanded him, in her creepy and witch-like tone, to make her beautiful and pleasant like any other court magician should want for his princess.
The magician, having recently failed in his pursuit of a lovely young handmaiden, was in no mood to be ordered around, especially by this particular fat, old crone. He waved his magic wand and shrank the ugly princess to the size of a mouse.
It is said that when the beautiful princess grew to the size of a castle she just giggled as her subjects ran in terror towards the next kingdom which was apparently ruled by a hideous, fat princess who was no larger than a mouse, but who had recently fallen into good favor with her people.