The Ontario-born That Don't Impress Me Much singer will fill Paula Abdul's now vacant spot and join fellow panel members Simon Cowell, Randy Jackson and Kara DioGuardi for the audition rounds in Chicago, People reports.
Hopefuls will be able to impress Shania on August 30 and 31 when the 43-year-old artist will use her expertise to help judge on the show.
The dates not only mark the Canadian star's Idol debut, but they also come hot on the heels of her August 28 birthday.
Meanwhile, as Shania prepares to turn her attention to rising music stars, her own fans are patiently waiting for new material from the Grammy Award-winning brunette.
Despite the fact she hasn't released a new album in seven years, a spokesman for Shania's record label recently confirmed a new record from the singer is "nowhere is sight."
It has been a tough year for the mum-of-one, with the announcement in May 2008 that her 14-year marriage to Robert Lange was ending, but Shania has acknowledged her supporters' long wait.
"First I want to apologise for the delay in releasing new music," she wrote on her official blog in June. "Music is the basis of our relationship, after all, and I realise I'm not holding up very well on my end of the relationship!"