Ds2(11)started secondary school yesterday.
When he put a 'proper' shirt on he made noises like he was going to choke to death as he's used to wearing polo shirts.
I measure and he is a 29 inch chest. The school shop advised getting his blazer a bit big, so he's got a 33 inch chest and the sleeves turned up underneath a bit.
He's only 4 foot 11, but I swear he has grown 5 or 6 inches over the holidays, fueled by suddenly sleeping and eating like a teenager. Having to get up at 6.45 yesterday was a complete killer for him (and me) 
And for the first time ever I got to work before my manager.
He also tried on his brand new, never been worn pe trainers yesterday, and despite buying them a size too big, he said they were too small. I bought a 6 when he was just going into a 5. Fortunately I have some size 7 trainers which he can have, which I've only worn 1/2 a dozen times or so.
I am feeling very old. And my roots need doing.
I have a ds1 who is supposed to start college next week (not that he has decided yet!), And ds2 who is at secondary school.