It'd be so tight if I saw a frickin' 81 year old with a nose piercing, but I agree with Jena14. A piercing is quite a hassle at first, so be prepared to care for any infections or uncomfortable feelings around your nose. Be sure to keep it clean as well. You might want to get your parent/guardians' input as well just to be certain about your decision if you're still in junior high. But if you're not up to that kind of stuff, I guess you should just do what you want because yolo.
Hmmm. I've seen some girls at school get piercings and they're like 13 14 maybe. I didn't think that was right. I mean I want a little nose ring but not right now. I'd say about 18. Or until you know what you want to be because if you want to be a doctor you might not get hired because of that. :/