attractive has nothing to do with fit...
ie i can be fit but my face coul still be ugly...
i think that chick looks hot...im straight so i can say that...i think thats an ideal fit body for a girl..i wonder if she used enhancements...
but again fit is subjective to what your goals are...cardio endurance, muscle strength, muscle endurance, etc, cardio intensity ie a long distance runner is obvlously fit...but is the worlds fastest sprinter fit?? probably, just different goals.
that chick though, for a girl, looked toned, flexible, and im assuming cariovascularly adequate

plus it looks like she had a good handle on her caloric and microntrient intake to be that toned. i think that is an aspect of fit that needs to be addressed as well,
someone who is thin, but bulemic isnt fit in my opinion, theyve missed the aspect of HEALTH and thats in eating correctly.
fitness is being healthy, and deriving as many and specific health benefits from yoru exercise routine as possible,
again for a girl my standards are cardio endurance, muscle strength, flexibility and eating balanced/clean intake for your weight and tasks.