Christie Brinkley has revealed the shocking moment she discovered her ex-husband Peter Cook was cheating on her with a teenager, a revelation that rocked her world and left her reeling. In her new memoir, “Uptown Girl,” the 71-year-old supermodel recounts the harrowing encounter in 2006 when a man approached her during a high school commencement speech in the Hamptons. “Excuse me,” he said, “I need to tell you that your arrogant husband has been having an affair with my teenage daughter.”

Frozen in disbelief, Brinkley described feeling like a cliché middle-aged woman as her entire life crumbled around her. “What do you do?” she recalled thinking, grappling with the gut-wrenching reality before her. As she continued her speech, the weight of the man’s words bore down on her, and she sensed her husband’s guilt from across the stage.

Determined to uncover the truth, Brinkley enlisted the help of friends and dug into her family computer, revealing a disturbing cache of incriminating files, including explicit photos and pornographic accounts. The affair was with Diana Bianke, who was just a teenager at the time, and during their divorce proceedings in 2008, Cook admitted to giving Bianke substantial sums of money, including a staggering $300,000.

Brinkley’s heartache was publicly confirmed when she later stated on Facebook that her marriage ended the moment a police officer informed her of Cook’s infidelity. Since the scandal, Cook has remarried, tying the knot in 2023 with Alba Junku, who was just 21 at the time of their engagement. The explosive details of Brinkley’s memoir are set to captivate readers, illuminating the painful betrayal that shattered her life and the complexities of love and trust in the public eye.