The Caldwells
I have to say I was watching all 3 movies of Au Pair, and I must admit that The Caldwells really look like they could be a family in real life. Then Katie and Alex they are so cute together as brother and sister they look like siblings in real life. Then Jenny and Oliver look cute together as a couple I think they should marry in real life, that is if the guy who plays Oliver isn't married himself.
Speaking of The Caldwells, in the movie you barely saw Alex or the father hold Sara, it was mostly Jenny or sometimes Katie.