Lighter colors tend to look best…most people decide on white.
Here’s an example of an older sibling with the baby on my white couch.
A simple tank like this will work for the skin on skin photo.
Or you can wear something strapless. I have a black backdrop if you like that better than the soft colors of the wall.
This isn’t done in the studio, but it gives an example of a casual shot for what a dad could wear.
Loose peasant tops will look really nice…
Here’s another example of a loose peasant top that sort of fades into the wall.
A casual example of solids, but notice the detail on her dress…it has an eyelet pattern and shirring at the top.
Another example of a light color with detail…
Here’s a wrap sweater worn over a tank.
Here’s an example of subtle pattern, which could work for either of you.