How to get rid of stretch marks?

Hey, now I'm not skinny but, I'm not fat either, but I have stretch marks by my waist and by the edge of my breasts. My boobs are a little big to be a 13 year olds but, I get them from my mom . My plan is too Loose Some weight during the summer, so I can sign up for dance. I weigh about 110 idk if that means I'm overweight or not? But some of my friends @ skool r skinner than me And they weigh 130, Is this normal?? So, if anyone knows how to get rid if stretch-marks I would luv to know how??? Also, ppl tell me I have nice love handles ; could that also be the reason????? Help plz!!!! :(:(:(:(