Songwriter Kara DioGuardi is set to replace Christie Brinkley on Broadway when the model's run in musical Chicago comes to a close.

The former American Idol judge will make her theatrical debut as murderess Roxie Hart in the Award-winning musical. She will begin her eight-week run on September 5th.

DioGuardi is the latest celebrity to join the Big Apple cast - singer Ashlee Simpson and actresses Brooke Shields and Melanie Griffith have all taken the stage as Hart.

Meanwhile, Brinkley is in talks to head overseas with the role - and take the lead in the West End production of Chicago.