How are the growth spurt of very tall women?

Anonymous
Since it's already hard for a girl to be 5'9 and even rarer for find one that's close to 6ft, this has me wondering.

Were the amazon women or tall models always tall even as kids or did were they probably the awkward shorter girl as as a kid that experienced delayed puberty (as a result of both genes and probably even having a delayed period, later than usual)?

So in your opinion how did they get to that height? I got reunited last year with a long time friend from middle school. She used to be the shortest female in the family. She went from a 13 year-old girl that was 5'5 to suddenly a 5'11 woman that's now 21 years old.
Updates
+1 y
Also, she did said she got her period shortly after her 16th b-day. I guess that must play a role too... delayed puberty in certain girls, which might make them taller than usual.
How are the growth spurt of very tall women?
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