I've been thinking about this lately as well. I also think that in general the born-in princesses are ageing better.
Lots of the married-in's are going the plastic surgery/botox/skeletal slimming route to fight the ageing process, which of course is a sad reflection on society. I can't think any of the born-ins who are doing this. Can anyone think of any? Madde maybe? I don't think Stephanie of Monaco has but i could be wrong.
I just hope my girl Vic doesn't go near a botox needle, i would be disappointed (but understand the pressure of course)