I agree. She's rarely seen completely nude. Although porn stars will freely show tits, pussy, and ass, some (just like non-porn stars) are sensitive as to how their stomach looks. that's the key to a voluptuous figure. (Or, maybe in all her other videos, the male partner is so anxious to fuck her, that he doesn't care if she's still wearing some clothing.)
First time I've seen her without something covering her stomach, thought it would be all stretch marked and shit, I was wrong. I would fold that little tummy over and fuck it for sure.