This is true. I also agree that this case doesn't fit my criteria of discrimination. However, this woman worked for Harrah's for 21 years. Then Harrah's changed the standards. She obviously knew her job and was an employee in good standing.
Whatever is going on, I don't like it. I bear no resemblance to this woman, but I don't wear make up anymore, and would resent the hell out of a new edict from my employer ordering me to paint myself up.
Conditions change. They changed the standards for everyone. There is an old business saying, "Adapt or die." She chose to terminate herself as far as employment is concerned.