The thing is they actually don't. I've seen Cardinals cheerleaders at many different functions over the years and in person they have always been more attractive than the official photos on the Cardinals websiteThese chicks make like $75.00 a week. It's to be expected that they look like Dog-Faced Gremlin.
The Cardinals cheerleaders are generally not the best looking squad in the NFL by a long shot. I believe that some organizations in the NFL place more emphasis on appearance and less on abilities, whereas the Cardinals, or at least Heather Karberg, the Director of Cardinals Cheerleaders, place more emphasis on dance and other factors.
But these women couldn't possibly look as bad in person, as a group, as they do in these photos.