Is it normal to still look like a kid at 18?
Mostly.Normal for most people
Yes, it can be normal to look younger than your age at 18. People mature at different rates, and genetics can make a big difference in how old you look.
Some people keep a youthful face or a smaller build well into adulthood, while others look older as teenagers. It doesn’t necessarily mean anything is wrong, and you may find your appearance changes gradually over the next few years.
If you feel like puberty hasn’t really started or progressed, or you’re worried about your development, it’s reasonable to bring it up with a doctor. Looking young by itself usually isn’t a cause for concern.