I've never seen Louise or James smile. Both look miserable every time they make a public appearance. They just don't look like happy kids.
James is at that age where he would probably have rather stayed at home and not walk to Church with his family. He did look particularly miserable on Sunday so maybe he had been told off beforehand as he had kicked off and he was in a bad mood. He is normally much happier and has such a cute little face. I really, really, really hope he stays cute and takes after Sophie's side and keeps his hair.
Louise is always smiling when out with her family. She's been taught well and knows how to present herself and understands that when she's on display it's formal. The photos just happen to capture moments she isn't smiling but in the videos she's smiling and there's a lovely moment when Philip walks past her and she gives a lovely grin.
I think everyone bar the Yorkies looked lovely on Sunday. I didn't love Kate's all cream ensemble but at least she was covered up. Sophie's choice of black was brave but at least she paired it with a pink coat to give it colour.