The difficulty shopping for maternity/nursing outfits

So, firstly, I don't mind that some of the maternity/nursing outfits are modelled by someone who isn't pregnant as the outfit should be for during pregnancy and afterwards. In fact, I think it would be useful if these outfits were shown on a pregnant woman and a nursing woman to show how it looks for both stages.

My gripe is that I don't believe any of these models are pregnant (the ones with bumps) or nursing (the ones without bumps).