Sorry, they are hereditary and some get them, some don't, and there is nothing you could have done to prevent them or get rid of them, unless you want to try plastic surgery of some sort. I think we just had a thread on this, and i mentioned that there were some studies done with Retin A on them, only you had to get started on them when they were fresh, not older faded stretch marks. Ask your dermatologist- maybe there is some new kind of laser treatment!