I decided maybe this sleeveless linen tunic will actually be a better contender than the Rails plaid shirt I wanted but missed out on.

Hoping it is not too sheer as wearing a cami is not an option in our heat.

ETA: the tunic arrived but alas it was waaaay too big. More like a dress. I would have needed to size down and get a petite for this to work. I'm usually a M 8-10 which is what I ordered. I also didn't love the white for some reason - not creamy and not white either, just didn't work on me.