Assuming from my expierence, i always look older than my age.
When i was like 15, that dude came to me at bus stop and we started talking and randomly he asked how is your 1st/2nd year at uni (it's usually 19-21 age) and i said i didn't even start high school.
When i was barely 14 i came to my firend's mom shop for some stuff and she asked "Don't you drink beer at that time? It's friday" (Alcohol is +18 here) and i was like wtf
Also recently someone thought i am 25/26 and i am 19
It's kind of funny because all my sisters, mom and even dad looks younger than they are.