I'm a 19 year old girl, I was going through Instagram stories and I saw this one girl I know (19F) post a photo from her vacation. She's always been a skinny girl. I swiped up and said "you gained weight and it looks 🔥🔥🔥". It was just because I noticed she had fuller thighs and it gave her a nice shape. One of my friends told me she was very pissed about the comment and she got extremely defensive about it, saying she hasn't gained weight in 2 years and it was rude. I really didn't mean it in a bad way, I just thought she gained weight and it looks good on her. Was that rude of me?

TL;DR told a girl she gained weight and it looks good on her. It pissed her off.