Is it cool for pregnant women to wear tight clothes?

I have noticed that some people do not know when and how to dress. Sometimes you see some heavily pregnant women wearing tight-fitting/revealing clothes thereby making themselves visibly uncomfortable.
You can look pretty while pregnant, but not by wearing overly tight-fitted clothes. This could be detrimental to the mum and the unborn child(ren).
Someone once told me she tries to look sexy for her husband so he won't be tempted to cheat on her because most men cheat on their spouses/partners during pregnancy. That's why she dresses in tight-fitting/revealing clothes.
There are a lot of fashionable clothes for expectant mothers that make them super trendy without having to wear tight/revealing clothes that could, sometimes, further put off their spouses/partners.
What's your take on this topic?

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