The "Finna Get Loose" rapper will join performers like Coldplay, Demi Lovato, Sam Smith, Nick Jonas and Kanye West for the shows at the MGM Grand Hotel & Casino on September 18 and 19, reported People magazine.
"Puff Daddy is back, and I am bringing everything I have to the iHeartRadio Music Festival," Diddy said in a statement.
"Music is everything to me - it's a blessing to make music. I'm excited to be a part of such a great lineup and I can't wait to make everyone want to get up and dance."
The entire Festival will then air as a two-night special on the CW Network on September 29 and 30.
