There are probably a number of opinions on this subject. I most assuredly appreciate wide sexy hips. I prefer the pear shape. I think prominent hip bones are VERY sexy.
Unfortunately, we are all influenced by the images we see. In recent years, there has be a trend toward images of women with "tube-shaped" bodies (boyish hips, only slightly wider than the waist). Another trend is toward a massively disproportionate bust (mostly surgically achieved). This influences sexual preference and taste - so suddenly, all the women start getting implants and wearing hip-slimming clothing rather that being what they ARE.
It is important, however, to make the distinction between sexy wide hips and obesity. There is NOTHING sexy about obese women, or obese men either. That is because there is NOTHING sexy about being unhealthy - and obesity is indisputably unhealthy.
For whomever may care, here is MY opinion of what is sexy and alluring in a woman:
1) Shiny, healthy hair (my preference is for brunette, chestnut-colored hair - but that is just me);
2) Bright eyes;
3) Clear, healthy complexion;
4) Hips wider than waist and bust (but not just FAT)
5) Confidence and maturity.
...My two cents worth...