Sean Diddy Combs On The iHeartRadio CountdownEnhypen On The iHeartRadio CountdownYung Gravy On The iHeartRadio CountdownEllie Goulding On The iHeartRadio CountdownBenny Blanco On The iHeartRadio CountdownLANY at Red Hat AmphitheateriHeartRadio Countdown - Niall Horan Guest Hosts! (Weekend of Oct 12, 2019)Madison Beer Agrees To Ghost Hunt With JoJo Rita Ora Keeps Hot Sauce In Her Bag and Loves Dressing Up