Discrimination

Abercrombie & Fitch refused a woman a job as a sales person in their store because she insisted on wearing a headscarf and that didn't gel with their "look policy". She sued them for discrimination on religious grounds & the court seems to be on her side.  

Wonder if a woman could sue a store for having a "look policy" in the first place? Is it equal opportunities if a job applicant gets or doesn't get a job based on her attractiveness? Be it a flight attendant or a waitress at Hooters?