I get comments about it all the time. The other day I heard an elderly lady say "Look at that flight crew. They all look like they are in high school."
Walking into a hotel the other night, an older lady in a big group of intoxicated people said "You look so young! You can't be over 18." My response, "I'm younger than that!! I just turned 16 and they let me fly a plane!!!! Cool huh?" After about ten seconds they realized that I was joking and I told them that I was 27, just cursed with a youthful appearance.