My middle boy was a miserable grump from the day he was born and three years later, he is still grumpy. The boy rarely smiled. Not saying that Harper is grumpy; she may be a serious kid. She's as cute as anything, as are her brothers. As for Brooklyn looking annoyed, he's 14. I thought a sneer or a frown was the normal teenage boy look.
I think they take hundreds of shots and sell the ones they want to. Posh has a "photo face". So do many people. I don't see how that can be used to say that her children are more miserable when they are with her. They have two parents. If they are good kids, it is because of both of them. I used to slate pouty posh, but I think she is an intelligent lady who has a biting sense of humour which does not translate well in print.