The following comes from IMDB's gossip page:
New Rules In Place To Avoid Another America's Top Model Riot
20 March 2009 6:25 PM PDT
The producers of Tyra Banks' hit reality TV show America's Next Top Model have created a set of rules for wannabes — to avoid a repeat of the riot that broke out at a casting call last weekend.
Potential contestants were waiting to try out for producers in Manhattan, New York, when chaos broke out on the streets outside the Park Central New York hotel. Hundreds of people were caught up in the melee, leaving the street outside the hotel littered with shoes and clothing.
Two women and a man were arrested on charges of inciting to riot and disorderly conduct, and six people were injured. Police were forced to shut down the casting call.
To avoid a repeat when America's Next Top Model bosses stage another open call in Dallas, Texas, on Saturday, producers insist they won't see anyone who has been lining up overnight, or prior to 6 am, and only women competing for a part on the show can stand in line, unless they're under 18. Teenagers will be allowed to stand with one guardian.