Do check out this series of photo in Der Spiegel on children of the Russian über-wealthy. I know these photos are posed, but boy do they all look stiff:
As the article notes:
“SPIEGEL ONLINE: None of the children in your book are smiling. Is childhood missing from your pictures of children?
Skladmann: I wouldn’t say that. But they live in a secluded world. Some leave that world, to go to a public ballet school, for example. Their parents are attempting to make up for the Soviet times — they only want the best for their children. They receive private language lessons, they go swimming or play tennis. The lives of these children are very planned and regimented. That forces them to grow up quicker.”