I photographed a short infant portrait session with my new twin nieces, Ella and Anna, when they were four weeks old. Since they were born 4 weeks earlier than most babies that aren't twins, they were about the size of a lot of new born babies when we did the photos.
This is right before Anna started screaming = why the portrait session was short.
Ella was less amused and cried the whole time.
Studio 310 Photography