Only at the iHeartRadio Festival will you see a collaboration with the '90s boy band and Florida Georgia Line.
We love the way this "Dangerous Woman" singer performed on Night Two of the festival.
"Police Reunion 2017. #DontStandSoCloseToUs #iheartradio," John wrote on Instagram after the surprise meeting.
While celebrating their one-year anniversary, The Bachelor stars meet one of their favorite Team USA athletes.
Whether dancing to Mary J. Blige or bringing out G-Eazy, the "Circus" singer's performance was pretty hot.
When not dancing to Ariana Grande or Britney Spears, the BFFs pose for photos backstage at the T-Mobile Arena before getting dinner at Beauty & Essex in The Cosmopolitan.
After making an appearance at the Global Citizens Festival in New York City, the "Yeah!" singer arrives in Las Vegas to perform for a sold-out crowd.
The Bachelor in Paradise star can't help but smile while posing next to the Hollywood actor.
What better way to celebrate a performance than with Jiff!?
In addition to showing off her $30,000 engagement ring, the Broadway superstar also wore a stunning pair of Simon G. Jewelry earrings to complete her sparkly look.
Surprise! The Voice coach appears onstage with the rocker for an unexpected performance.
Before introducing Britney Spears to the stage, the Scream Queens stars have some fun backstage.
Everybody stops for Jiff, especially the Dancing With the Stars family.
It's family night at the T-Mobile Arena for Hollywood's biggest stars.
Oh what a night! The rapper delivers an electric set on night one of the iHeartRadio Music Festival.
From rock 'n' roll to country music, there's something for everyone at this festival.
In between dancing to Sam Hunt, the Fashion Police co-host meets up with the happily engaged JoJo.
Team Jacob? This Dancing With the Stars pair sure is!
The boys of The Bachelorette are back in Las Vegas for the iHeartRadio Festival.
You just never know who you're going to meet at the iHeartRadio Music Festival.
The Bachelor in Paradise stars reunite at the T-Mobile Arena in Las Vegas.
NEXT GALLERY: Singers Performing Live