American singers Adam Lambert and LeAnn Rimes and Aussie star Kate Miller-Heidke are joining returning judge Guy Sebastian for the upcoming season, Seven Network has announced.

It sees the departure of British pop star Rita Ora, American performer Jason Derulo and Australian singer Jessica Maulboy.

A two-time Grammy winner, LeAnn Rimes reached chart-topping success at the age of 13 in the mid-90s with the track Blue, and went on to be known for hits Can't Fight the Moonlight, How Do I Live and I Need You.

Meanwhile Adam Lambert brings reality TV experience having placed runner-up on American Idol in 2009.

The Whataya Want From Me singer has toured the world as frontman with rock band Queen since 2011, and was recently announced as the headliner for the 2024 Sydney Gay and Lesbian Mardi Gras festival.

Queenslander Kate Miller-Heidke represented Australia at the Eurovision Song Contest in 2019, co-wrote the music and lyrics to the Muriel's Wedding: The Musical and reached multi-platinum success with 2000s hits Caught In The Crowd and The Last Day On Earth.

The singing competition is back for its 13th season in 2024 with Gold Logie winner Sonia Kruger returning as host.

Production begins in February before the show airs later in the year.