How do I get rid of my stretch marks?

I'm just about 9 months pregnant right now and recently started to get stretch marks on my side and front of my stomach. They aren't very dark but there are at least 20. After I have the baby, I really want to get rid of them. I used Palmer's cocoa but since I found out I was pregnant but that clearly hasn't worked. Does anyone have any idea what will get rid of my stretch marks like completely?