Madonna and Rihanna are among the new additions to the line-up for this year's iHeartRadio Music Awards.

The ceremony is being held at the Shrine Auditorium in Los Angeles on March 29.

A host of big names have been confirmed to perform at the event, including 'Rebel Heart' star Madonna and Rihanna.

They are joined on the bill by Sam Smith, Iggy Azalea, Florida Georgia Line, Jason Aldean and Meghan Trainor.

Also due to perform are Kelly Clarkson, Snoop Dogg, Jason Derulo, Jennifer Hudson, Alesso and Nate Ruess.

Actor Jamie Foxx will host the event.

Azalea and Smith meanwhile lead the nominations with five nods each.

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Watch Madonna perform live below: