What’s the best way to lose cellulite?

I have a slim build, I dont eat a lot and I play sports twice a week but I've noticed that I have cellulite on the side of my thighs near my behind--the most common place women get them.
The sport that I'm into requires a lot of running so that's my cardio workout. I'm not into any diets as well. Does the fact that i'm a year shy of 30 have anything to do with it?