Some of the most memorable models from the first four seasons of America's Next Top Model are in the middle of a weeklong "Top Model Top Stars" tour. You may have missed them in New York and Chicago earlier this week, but it's not too late to catch Eva "the Diva" Pigford, Naima Mora, and more former contestants when they make appearances in San Francisco, Los Angeles, Las Vegas, and Dallas. Get the dates and times here. The tour kicked off in New York City on Monday, with the ladies hitting the catwalk for a Fashion Week runway show sponsored by UPN, Elle Girl, and Wal-Mart. About.com was in the house for the fashion show and the after party. Click here to check out our photo gallery.