Not that I've ever heard. She really does have the build of it though - tall(ish), very slim, and like you say, always perfect posture! Although, I'm short, plump(ish) and yet I have always had perfect posture. I found I came to it naturally. Really saves on back aches!
Dan has horrible posture! He can't sit up straight for the life of him! He even had to go to a physiotherapist to help and it kind of worked.
"You're going into the water... short-arse!" - Sherlock