Prior to competing in Nuestra Belleza México , Beltrán participated in Miss Earth Mexico in 2007 and placed first runner-up as '' Miss Air '' . A year later , 21-year-old Beltrán represented her native Sinaloa in her country 's national pageant , Nuestra Belleza México 2008 , held in Monterrey , Nuevo León on September 20
Nuestra Belleza México 2008
Nuestra Belleza México 2008
Perla Beltrán