Notice a few things. First - Norah is totally into posing right now and usually she has to ask if her hair looks okay. Isn't she a little young for that?
Second - After you look at Norah's pose, look at Daphne. She totally did that all on her own. It was all we could do to get her to sit for 5 seconds and when she did (and we looked back at the picture later), she was sitting just like Norah!
Third - I don't know what is up with Lucy, but that is how she smiles for a picture unless you tell her to smile nicely. We were so focused on getting Daphne to sit that I didn't notice Lucy's smile - in every picture!!