Its a dressing gown!
This has been a project on and off for a while, but as the weather has started to chill a bit I thought it may be good to get it into some kind of wearable state.
Pattern is a (heavily modified) free coat pattern from mood fabrics, exterior is overdyed linen, lining is cotton flannel, interfaced with cotton batting, and the collar/lapels and cuffs are done in a quilted cotton sateen!