Luann, 54, dropped the musical bombshell after her RHONY costars questioned her singing abilities during the explosive reunion.
“I want to tell you all right now, that for someone who can’t sing, I just got cast in Chicago on Broadway," she said.
Luann spoke too soon, according to her rep, who denied her Broadway claims to Page Six on Friday, July 26.
“Due to scheduling conflicts, between her Bravo show, her jewelry line and her successful cabaret tour with The Countess and Friends Luann will not be joining the cast of Chicago at this time," her rep said.
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Luann had been telling people as recently as six weeks ago that she had been cast in the role of Mama Morton.
Real Housewives of Atlanta star Kandi Burruss played Mama Morton for several months last year.
Luann still enjoyed a great amount of success in music this past year. She dropped the video for "Feelin' Jovani" in June that featured fellow Housewives Lisa Rinna and Cynthia Bailey in it.
Do you think Luann will ever be cast on a Broadway show? Sound off in the comments!