You could make a case for each one of them to be in role models in their own way. In a traditional sense it's obviously Katy, but that doesn't mean the example she is setting is more powerful than the others.
Another night comes to an end. Meaning another morning is around the corner, and Madonna will have to face the horrifying ordeal of having to look at her reflection, one day older. I wonder if she's had all the mirrors in her house taken down.