Is Cellulite Genetic?

I am pretty thin, within the "healthy" BMI range. I've lost a few pounds and I have a few more to lose, but no matter what I seem to do the cellulite on my thighs and bum remains.

I am pretty active. I walk everywhere, stand most of the 8-hour day at work, and incorporate squats, sit-ups, push-ups, etc. into my routine. I know my mum has a lot of cellulite in her legs. Is it just genetic that I will always have cellulite in these areas?