Christie Brinkley to join ‘Dancing With the Stars’

Christie Brinkley is joining the cast of “Dancing With the Stars,” Page Six has exclusively learned.

“They’ve been asking her for a long time – about 15 years and she finally agreed,” a source told us.

Brinkley recently returned to Broadway, starring as Roxie Hart in a successful run of “Chicago.”

The supermodel was also spotted recently filming the season premiere of “The Goldberg’s in Hollywood.”

We’re told she’s prime for the spotlight.

“She felt the timing was right to join the show,” the source said.

ABC will announce this year’s contestants on “Good Morning America” on Wednesday, ahead of the show’s Sept. 16 premiere.