Here you have the second session about pregnant that I shot during last weeks. I used different lighting set-ups to get different results. In this post you can check one lighting diagram that I used.
1.- Strobe with a grid to light the face.
2.- Strobe with a grid to light a bit the belly.
3.- Octabox to light very hard the back of the pregnant woman and light the background just a bit with a soft light.
And finishing the post two couple portraits: