comparison

Samuel - 5 months

Charlotte - 5 months

Abel - 5 months

As you can tell Sam is quite a bit skinnier than our other two were at the same age. In fact, it appears that Charlotte and Abel had not yet grown a neck by 5 months (maybe that came more around 6 months :-) James assures me that Sam's skinnyness will mean that he will always be my tiny baby - I hope he's right.