My son, almost 11, has always been on the 99th centile, until a year ago when he shot up. I'm assuming he's going through puberty early - sleeping late in the mornings, greasy hair, teenage attitude! He's now 5' 5" and noticing that he's as tall as many adults. My family are tall (I'm 5' 10" and the men on the danish side of my family are all well over 6ft). Has anyone else got a tall son who's going through/has gone through this early growth spurt? I try not to worry, but it would be reassuring to find that others are in the same boat.