About 17 years ago. PMSL.

Stretch marks are a genetic thing. Pretty much if your mum has them, your gonna get them
MY MUM DOESN'T HAVE ANY!!! Boohoohoo
Even with the twins she didn't get any! Although she did pop at 33wks.

Ummm principessa76 i got mine first one at about 6wks - boobie ones lol.
Then at probably 24/25 weeks. I grew all at once though...
And then i even got one while bub was descending during labour which i found amusing.