A digression: I would like to know why there are shirtwaists in the 1860s, and then you see NONE, zero zippo zilch, up til about 1890. I've been looking through my books, through Pinterest, and there's nothing. Not one single shrtwaist can I find! I find it hard to believe that all women stopped wearing them in 1869 and suddenly picked them back up in 1890, but they certainly disappeared from fashion, anyway. There are a decent amount of yoked bodices out there in the natural form era, but they're all made of the same fabric as the skirt(s), nothing in a lightweight white.
Why was I looking? Because the forecast for Saturday is currently hovering in the 90-95F range, which is...not great, Bob. Not dressing in costume didn't cross my mind, but a lighter weight bodice would be nice! Two layers of cotton broadcloth (which is what the current bodice is) isn't terrible, but the boning, tight fit, and high collar aren't exactly cool, either. So I went browsing for shirtwaists, and couldn't find a single one!
And said, f it, I'm making a shirtwaist anyway. I doubt that literally no women in hot climates were wearing shirtwaists around 1880, even if they were horribly unfashionable - and even if I'm wrong, I don't care. So there.
So I made a good portion of one today, and oh gawd it's ugly. It looks like a sister-wife's maternity blouse from 1992 at the moment, and it's not really going to get much better once I put sleeves on...but dammit, it's voile and not tight-fitting!

Will also have to throw together a corset cover, as my corset's blue, but hey, how hard can that be? (Ha ha ha.)