Model Christie Brinkley, husband separate (AP)

1 hour, 2 minutes ago LOS ANGELES - Supermodel Christie Brinkley and her fourth husband, Peter Cook " /> SEARCH News | News Photos | Images | Web " /> Peter Cook , have separated, her publicist said Tuesday. "Yes, it's true. The couple has separated," publicist Elliot Mintz said in a statement. Cook and Brinkley married in 1996 and have a daughter. Brinkley, 52, was previously married to Frenchman Jean-François Allaux, singer Billy Joel " /> SEARCH News | News Photos | Images | Web " /> Billy Joel ...