I was that girl! In some ways, I still am, just not so young. I was always thin, skinny as you called it, when I was young. I mean, my ribs stuck our further than my non-existent boobs, LOL. And I was body shamed continually. People thought my life was perfect because I was thin. Or they thought I had an eating disorder. Or they accused me of being a bitch. I've had women, grown women make snide comments to me out and about, "grab a sandwich," shit like that. That was okay, but I'd never dream of saying, "grab a carrot" to a big girl. Body image is a problem for all of us, big and small. The western, male conception of beauty has divided us.
It's so hurtful when a larger sister says something mean to me, even now and I'm almost 53. It's like she thinks my thinness made her big, like she's angry at me for my size. It's crazy. My being thin no more makes another woman big than her being big makes me thin. We've been manipulated into turning on each other, we need to come together.
I'm glad you recognized that your words were hurtful, that's progress and I thank you for that.