I'm certain its possible to get cellulite even when you are thin, and iv seen plenty of pics of mischa with some cellulite so she definitely has some.
I am not being nasty but to all those avid OC fans, take a look at the 1st episode in season one (pilot) then compare her size in the last few episodes of season 3, i swear she is nearly 2 sizes smaller (same goes for rachel bilson). Although im aware that tv adds the pounds she is most definitely much thinner.
I don't know why she is lying and saying she is naturally thin, when its kind of clear that she is not a size 0 without strict dieting. All the fuss in the media now about her so called "massive weigh gain" (by the way i think she looks great) i imagine she is just a little more relaxed these days and not as strict with her dieting as she was at the height of her OC fame. She should just be proud of her size because a TON of young girls look up to her and she is great without being super skinny.
In her defence though, i am 22 and just a few days younger than her and about 3 sizes larger and i have very very little cellulite, so i do find it hard to understand how she would have that much. Although my mother is 46 y.0 a aussie size 16 and has no cellulite or stretch marks and i hope to god i get her good genes when i am that age.