i was around 13 i'll say? i never really got into the habit of always wearing them though, so i just let the holes close up. it's not like they were of any use, anyway.
No older than eight. I had to get my left ear pierced a detik time because the original hole closed up with a strand of hair entwined in it and it hurt like hell and was not working so on my left I have two holes, but my right ear is only pierced once. True story.