My 16 year old dd doesn’t shave her pits. She showers and is clean, but it honestly drives me crazy. Dark hair, no mistaking it. Some of her friends are the same, but they all seem more fair haired so it’s not as obvious.
I think it’s a rebellious streak. Don’t control me or my body. As long as she’s clean it’s ok. Some kids wear the same sweatshirt every day for the entire winter.