No worries. I know it. I'm hoping that when I'm forty I'll look 33, and so on, and so I'll reap the benefits for the majority of my life when I'll want to look younger rather than older. (It's just going to suck for the next eight years or so.)
Don't feel bad, people think I'm 14 or something. When I say I'm a sophomore, they ask me which high school I'm attending. But I am going to age very, very well. :]