How do i get rid of stretch marks ?

I Was REALLY Skinny Before , I Was not Anorexic or anything , just small. but i got thick , not fat , just thick , as in i got Hips , Boobs And i have a Small Pudge On My Stomach , but Im not fat. My Stomach Was so Small That When i Sucked in YOu COuld see My Ribs. but Now It look More healthier . but Along With my Growth i Got Stretch Marks . Some Are Dark And Some Are Light . Like Around My breast , Thighs, And My Sides . How do I Get Rid Of Them ?