(very) Retro AltBoobWorld : The Countess of Somerset. But is she actually wearing an open-fronted dress? The shape suggests she is, though she also has shoulder-boobs. Perhaps it's the corset.
“Ha looks like you guys are sleeping on the floor” my parents are cheap so when on holiday they booked a single room for me and my two step bros and they refused to change it even after second puberty turned me into a girl (RP)