Some vintage fabric (of course) that is very light weight - more of a layering shirt to be worn over a tank in Summer and maybe over a thermal in Winter. I based this off of a shirt I already own and adapted some sleeves from a Built by Wendy pattern, and surprise, surprise - it fits!
I think it will be perfect with some skirts. I just wish that I made a pattern so I could do it again much faster.
But before that, back to some knitting.