My tummy was pretty small during DD's pregnancy so I didn't get any there but I was expecting them, and am sure I will get them if my skin actually has to stretch there in this pregnancy - as during puberty I got them Baaad on my breasts and upper arms. They have faded to white silvery/grey lines but they are still there 10 years on and destroyed the elasticity in those regions. My mum doesn't have a stretch mark on her (stretch mark genes can come from fathers side too) but she got left with an 'apron' after getting so huge with a giant baby and too much fluid - I'd rather have a few stretch mark scars than that - I am afraid of getting that.