This is Carole wearing this super loose-weave cotton shirt using the Butterick 6070 which she has used several times as the buttonholes are hidden behind the placket. Great if your buttonholes have the occasional wobble!
This cotton is super soft with a gauzey jacquard type weave (unusual), it resists creasing and is great to wear in the hot weather as the drape tends to hold it off the body.