There's more too it then just being "qualified". You are also playing a part. In that customer-facing role, you are the face of the company. You are are what the company wants customers to see to build and reinforce the brand. Hooters relies on cleavage as part of their brand.
My questions for you are:
1) Are nondiscrimination laws appropriate, when it is so easy to discreetly, or justifiably, discriminate?
2) If they still are appropriate, then what limits, if any, should be placed on them so that commerce is not harmed?