Lady Gaga and Jennifer Lopez were amongst the star performers at this weekend's iHeartRadio festival.
The two day event, held at the MGM in Las Vegas, also drew performances from Nicki Minaj, Joe Jonas, Black Eyed Peas, David Guetta plus reality TV judging rivals Nicole Scherzinger and Steven Tyler.
Perhaps the biggest moment of the night came when Lady Gaga duetted with Sting live onstage.
Take a look at the pictures above to check out all of the action.
PREV
NEXT
You can keep up to date with all the latest news from PopDash by following us on Twitter and liking us on Facebook.
PHOTOS: Rebecca Ferguson Kicks Off First Headline Tour
Cheryl and Harvey, Madonna and Lana Del Rey Album - This Weeks Biggest Stories (Feb 3)
X Factor USA - Who Should Replace Nicole and Paula?
Pop's Most Iconic Logos
Is Lady Gaga An Alien?
Nicki Minaj Attacks Lil Kim On New Track 'Roman Reloaded' 
Nicki Minaj Gets Through $50k A Month On Accessories.jpg)
