Ashlee Simpson-Wentz's Surprise Farewell to Chicago Cast

Ashlee Simpson-Wentz bid farewell to her Chicago co-stars at the weekend by throwing them an impromptu party to mark the end of her stint in the Broadway musical.

The singer-turned-actress, who appeared as Roxie Hart in the New York production, hung up her dancing shoes earlier this month to make way for ex-Destiny's Child star Michelle Williams.

And she made sure she departed the show on good terms - by treating her castmates to a special surprise bash at her rocker husband Pete Wentz's Manhattan bar Angels & Kings on Sunday night.

News of the farewell party follows a string of reports alleging the 25 year old had been an unpopular member of the cast. Simpson-Wentz allegedly angered her stage colleagues at an after-party for her New York debut when she barricaded herself and her family in a makeshift Vip section.