Let’s suppose the employer wanted to keep the old uniforms and it was the employee who wanted to change to something sexier in order to increase her tips. If she decided to quit because she didn’t get to wear the sexy uniform, could the employer demand she continue to work for him, wearing the old uniform? Could the employer get damages from the waitress if she quit in order to work at Hooters?
No, of course not. THAT is employment at will.
Save it for the jury!
He fired her for refusing to dress like a whore for him, after years of faithful service. Throw him in the snake pit!