All of these are taken at 18 weeks. Man, do I look tired! I promise I'm getting enough rest. Standing up I may look more or less the same to the untrained eye - but I promise my belly is a little rounder and a little lower.
Of course, if I lay down and suck in my stomach most of the chub is absorbed and what's left is most definitely baby.
The top of my uterus (fundus) is just below my belly button at this point in pregnancy which creates a sort of "ski-slope belly button" - which I find hilarious.
It's hard not to look lovingly at a photographer that thinks every picture turned out beautifully - even the ones with twelve chins.