I've noticed as I get older that even those in their mid-20's can look 12 years old to me. Knowing Claire is supposed to be 19 or so, it didn't really affect me.
To me? It's the opposite. Teenage girls look older than they actually are. It doesn't help when they try to look much older either. I call em jaaaailbait.
Now, if we're taking about my kids who have Asian ancestry? Yep. They look pretty young. My eldest kid is in her early 20's. But, she can pass for a 15-year old. Many people mistake her for a Korean because she likes K-pop and she's got her mom's eyes. ;)
I'm gonna be thirty-one soon and everyone thinks I'm in my mid to early twenties. I was surprised some months ago when I looked closely at an ID from ten years ago. I looked like a fifteen-year-old.