What Is A Supermodel Anyway?

Barcelona, SPAIN: British supermodel Naomi Campbell wears a creation by Spanish designer Patricia Avendano during the Barcelona Fashion week (Pasarela Gaudi) Wedding Dresses show in Barcelona, 15 June 2006. AFP PHOTO/CESAR RANGEL (Photo credit should read CESAR RANGEL/AFP/Getty Images)
What is a supermodel and what does it take to be one?

The supermodel has evolved from Twiggy and Lauren Hutton, to Christie Brinkley and Iman, to Naomi Campbell and Kate Moss. Supermodels have held our attention for decades but today we might be more likely to see actresses on the cover of Cosmopolitan and Glamour.

Have supermodels become extinct or are they on the way back?

Photos: The Top Top Models
Early Show co-anchor Russ Mitchell talks to some of the biggest names in the business about what it means to be a supermodel on CBS News Sunday Morning at 9 a.m. ET.