It's not a typical Bridesmaids combo but I think it's a good look.
It's sort of like 'Bridesmaids all grown up"
They could wear a matching skirt and then pair it with whichever top they wanted.. or the same top in different colours.. or the same skirt and top.. And as long as the skirt was a flattering cut I believe it may actually turn out to be something that could wear again and again
Yeah nipples showing is one sure way to upstage the bride.. but if imagine more opaque fabrics you can see its a winner!
It can be as casual, formal, matching or non-matching as you and your BMs want it to be.
I have run this idea past my bridesmaids and they both seem keen.