NYC- The ravishing teen at the center of Christie Brinkley’s marital meltdown is a “naive girl” who is now mulling legal action against the supermodel’s husband, her lawyer said yesterday.

Peter Cook, 47, caused “substantial and irreparable harm” when he showered aspiring singer Diana Bianchi, 19, with luxurious gifts – including a Nissan Maxima – and then seduced her behind Brinkley’s back, the lawyer said.

“It amounts to preying on an innocent, young and naive girl who would otherwise have no attraction to a 50-year-old man,” lawyer Joseph Tacopina said. “He offered her money, a job, career advancement. And when he got her comfortable, he made his real intentions known.”