Trace and Christy - lucky things!

Yep, it's genetic (plus also of course how much weight you put on during pg). Moisturisers/oils only sit on the outer layer of skin, whereas the stretch marks come from the collagen layer (deep down) tearing. And how 'stretchy' your collagen is unfortunately is genetically determined.

I have no chance...my mum and sister both got lots of 'em...