If that's the girl you're banging, I'm pretty sure your idea of fat is distorted. By the look in her eyes, she'll run you through with a hot ice pick if she catches wind of this thread though.
Had a similar situation years ago. Told the ex that I'd do it, but she would need to bring a friend (chick), because I wanted to assure that this was just for fun, no chance of getting back together. She went for it and brought a chick that was 3x hotter than the ex. Needless to say, I spent much more time working on the new chick, which caused the ex to end up leaving in mid-bonk, and crying in the bathroom. I finished up with the new chick because, well, I'm just a good host that way.
There does not exist a single person on 2p2 who would not bang this girl if it requires little or zero effort. Is she hot? No, not really. Relevant? Not at all.