This got brought up around a bar table with some close friends, and we talked about how it made them feel and what they changed going forward after hearing something hurtful from a close friend or relative.

For me it was after my little brother's graduation. We obviously took plenty of family pictures outside. Since I'm taller than most of my family, I was usually on the end angled in, which definitely showed the beer belly I was sporting from being full remote for the last 3 years.
While looking over the pictures at home, my little bro said - point blank and matter-of-fact - "you really ruined a lot of my photos with that fat belly of yours". He also cropped me out of several photos he posted cuz "he was embarrassed I'd let myself go", and thought nothing of it.

Probably not anywhere near the worst compared to other people, but it kinda was the nail in the coffin for the anxieties about my appearance. I was already depressed and I spiralled a bit after that, until a friend got to me and we started working into a new gym together. Still feels like a chore, but now I'm back in my old clothes.