The divorce trial between Christie Brinkley and Peter Cook began on July 2, 2008. The former couple signed an agreement in July of 2008 but new issues arose. The two finally came to an official agreement on October 14, 2009.http://www.boston.com/ae/celebrity/articles/2009/10/14/brinkleys_divorce_finally_settled/

The trial was open to the public, a move that Peter Cook opposed. Brinkley's lawyer said that she had "nothing to hide" as a reason why they pushed for a public trial.NY Daily News: Divorce-trial antics could hurt Christie Brinkley & her kids: Experts (June 24, 2008)

Architect Peter Cook was Christie Brinkley's fourth husband. The couple married in 1996 and filed for divorce in 2006.

Brinkley filed for divorce after the discovery of Cook's affair with Diana Bianchi.FOX News: Christie Brinkley, Peter Cook Spar in Divorce Court Over Homework Duties (January 23, 2007) Brinkley also claims that Cook spent hours looking at online pornography.New York Post: Porn to be Wild (June 20, 2008)

Diana Bianchi first met Cook while working as a clerk in a toy store. Soon after, Cook offered her a position as an assistant in his architecture firm.FOX News: Christie Brinkley, Peter Cook Spar in Divorce Court Over Homework Duties (January 23, 2007)

Their affair allegedly began in 2005 and ended after Bianchi suggested she might file a sexual harassment suit. Cook allegedly paid Bianchi $300,000 to prevent her from taking legal action.FOX News: Report: Christie Brinkley's Husband Paid $300,000 to Keep Teenage Lover Quiet (June 24, 2008)