Following on from the Catherine's looks thread below I think it is fair to say her childhood upbringing has had so much to do with who she now is.
Her parents took great pride in the familys appearance, manners, education & extracurriculars.
The Middleton kids excelled at swimming, athletics, lacrosse, hockey, netball, skiing, triathlon (James & Pippa), rowing, tennis on top of amateur dramatics, piano & girl scouts.
That type of investment carrys on into adulthood.
And I do feel the Middleton's were fantastic parents in the kids younger days, very clued in & knew exactly what type of children they wanted to raise.