First up: Gertrude Stein.
"Sophie Schilling and Pauline Schilling were sisterly with one another. Sophie Schilling like most fat sisters was afraid of the thinner. Sometimes it is the thinner who is afraid of the fatter when two daughters are sisterly together but most often it is the fat sister who is afraid of the thinner. It is not so much being older or younger that makes sisters afraid of one another, it is a kind of power that always one has over the other, mostly it is the fat one who is afraid of the other because it would hurt more if pins were stuck into her, not that the thinner is always in any way meaner, sometimes it is the fat one who is afraid who is the meaner, but there is so much more of her, there is so much more unprotected surface to her, somehow, it is that which makes her afraid of the thinner even when the thin one is really never nasty to her." (The Making of Americans, 79)