This link has 9 great ideas for pregnancy photo series.
I/we loosely based our photo series on #6:
I liked that the outfit and backdrop remained the same so you could really see the differences! So here is our pregnancy photo series!
Of course I was planning to take weekly photos... gave that up pretty quickly. And actually I was going to take another one the weekend after Everett was born (36 weeks). So I'm not at my most pregnant here.
Thankfully we were able to squeeze in our maternity photos the night before Everett was born! Here's one where I look my most pregnant: