It is!
I've long stopped trusting mirrors especially with eyes like mine. I just feel heavier and like there is much more of my body present.
Is that you in the avatar, you're very thin.
It's not the mirrors that are lying, it's our minds. We look at ourselves and we think we are bigger than we really are while to everyone else we look smallar to them.
I also live with an eating disorder I was diagnosed with anoriexia lat year but I don't think I have it or maybe I do, I don't know. I feel I don't have it anymore because I eat more food now than I did when I lived with my aunt and uncle. I also learned when girls say they want to eat but they can't isn't bullshit because they do want to eat but they can't eat because they are afraid of getting fat. I had to be there to understand it.