What age do dd`s start periods on average

[mooshy]

Probably nothing to worry about i hope.DD is 14 and all her friends have started their periods.She has developed elsewhere and seems less hormonal than she was a couple of years ago.I have reassurred her that her period will prob. start in the next couple of years ?? I shouldn`t be concerned should i ?

I thought it was 45kg + they need to 'look' right - bit of a waist, breasts definitely there, some pubic hair. My dd started just after her 10th b/day still in primary school - nightmare, had to tell teachers so she could use staff loos as no sanitary bins in kids loos then (there are now!). But being one of the first quickly became a real source of pride and expertise.

My dd of 16 was 12 yrs when hers began and i was 11 and half! very young really !

my dd was just 11. my friends dd started a couple of months ago just before her 10th birthday but she is incredibly overweight though so dont know how much bearing that has