An observation...
If you want to know what a woman will look like in 20 years, look at her mother. I remember many slender young frauleins in Germany. I also remember what most of the putzfraus looked like (built like a refrigerator with legs). When a young coworker got married some years ago, her friends gave her a tee shirt that showed a beautiful woman saying, "Now that I'm married, I can get fat!"
The same observation probably applies to men, too, perhaps more so.