The USC Song Girls are world famous...one of the icons of college football. Many go on to become models/actresses. Years ago someone wrote an article, factually-based, which said the competition to become a Song Girl was more rigorous then to become a walk-on to the football team.
And it's worth mentioning their outfits are some of the most wholesome you will find. Classic look with the wool sweaters and skirts. Not slutty/trashy like many of the SEC schools cheerleaders.
Really hope you were either kidding, or you are a UCLA fan.