Why shouldn't they?? What's wrong with them wearing lipstick and how does this correlate in any way?
How is this actually a question?
The only reason not to is if for some reason it negatively affected the baby.
Why not? Pregnant women shouldn't excluded to looking pretty just because they are pregnant.
what is wrong with that? YOU DO YOU
Just because you're pregnant doesn't mean you have to walk around with plain lips
Makeup isn't worn just be seen as attractive to other people. Anyone can wear makeup because they want to and it makes them feel happy. Don't deny pregnant people makeup.
This question is stupid because lipstick doesn't negatively affect the baby, and It is something that women wear to feel confident. It doesn't make sense to restrict a woman from wearing what she feels comfortable in.
It is their choice and we cant do anything about it. Free will people!
Umm, It doesn't harm the fetus or anything so why not?
As long as it doesn't harm the baby, It's fine.
I personally believe that pregnant women should never wear lipstick. It makes them look too attractive which is just plain stupid considering the fact that the woman already has a husband / partner who she created the baby with. This could lead to affairs which humanity just doesn't need.