Unsightly fat rolls under butt?

I know I'm not fat, I'm 5'7", 135 pounds, I do comp cheering and run a ton and I'm a hurdler sprinter and jumper in winter and outdoor track. I'm a 34A and I have a 27 inch waist and 34 butt measurement. I need to know how to get rid of the small fat rolls below my butt. Is it a big deal? I hate it :( help! :(