medical proof this is poss? I am about 152cm (5ft1 ish I think), I have always been small although both my parents are around average height and my sister (16) is taller than me. I never really had a growth spurt in my earlier teens but recently have noticed I feel taller against my mum etc.

I don't want answers saying simply 'u stop growin at 16'. Tell me if this is possible, if it's happened to you, can people really still be growing up to 21/22?

Thanks