What is a good, fast, and easy (er) way to get rid of stubborn stretch marks?

Hi, I'm Bre, I'm 18 years old, and I have very ugly grotesque stretch marks on my lower back and thighs.... and I do not know how to get rid of them! I recently lost a whole lot of weight (going from 156 down to 107; I am 4' 11"- a shorty) and all I got from losing this weight was stretch marks that look like hideous scars; icky battle wounds-like someone took a knife and split open my lower back a hundred times!! I want to put my healthy weight to good use... and maybe wear a decent bikini this summer at the beach.... please please please any good suggestions to make this stretch marks look better... or even disappear completely???