Christie Brinkley Breaks Her Silence on Relationship with John Cougar Mellencamp

The supermodel and the singer were first linked in September.

However, the supermodel told Howard Stern on Monday that she's "leery" of revealing too much about their relationship.

Stern was in a unique position to ask. The radio host said that he introduced Brinkley, 61, to Mellencamp, 63, and encouraged her to convince the rocker to quit smoking.

"He has to," Brinkley agreed. "The voice is already made and he has to stop."

"I respect artists so much," she said, "and I absolutely love music as the ultimate art."