Mmm...as a woman, I love a tight ass and lean, fit legs (thigh gap is a bonus) in part because those just automatically mean she's active and works for something so...ugh...then it's waist and collar bones. Can't speak for other bi/lesbian women, though.    On men, I agree with @theepilepticferret. Though I also (forget the muscle grouping) love that V guys get below their lower abdominals.