So here's some images of body fat % in women. I'm not sure how accurate the percentages are, and the angle and lighting account for a lot, but there's at least something to discuss here.
The 15% girl has no "attributes" (breasts, ass etc) and is just sort of a skinny plank, so kind of a no go for me. On the higher end, I think all of the ones listed at 25% and 25-26% (possibly excluding the middle one in the orange bikini) look worse than the girl at 30%. If you compare the girl at 30% to the one listed 25-26%, she has larger hips and bigger breasts, which carry her fat much better than the 25-26% girl, who has a lot more in the stomach comparatively. Up at 35% she has curves yes, but would look better without the belly fat. Although, if she had bigger breasts and ass than it looks like she does, she would still be a "yes" for me. As she look in this picture, I'd let her pass. In other words, the important characteristics are the ratios: T&A (and hips) to belly fat.
https://deepstrength.files.wordpress.com/2015/08/tumblr_inline_noq8yi4d2y1t6co2z_500.png
I think my ideal girl in terms of body looks like the girl at the beginning of Hotling Bling, which is curvy in the best possible way: