Carrie Underwood
The singer performs onstage.
Shawn Mendes and Justin Timberlake
Two are better than one!
Carrie Underwood
The "Cry Pretty" singer sparkled on the carpet.
Bachelor Nation
Party in Las Vegas! Bachelor Nation's favorite contestants come together at Planet Hollywood before heading to T-Mobile Arena for two nights of performances.
Kristin Cavallari
The Very Cavallari star looked white hot on the red carpet.
Dua Lipa
The "New Rules" singer performed at the festival.
Becca Tilley & Tanya Rad
The Scrubbin In With Becca Tilley and Tanya Rad podcast co-hosts enjoy a girls' trip to Las Vegas! They completed their red carpet looks with Cheeky Tans.
Wells Adams & Sarah Hyland
The Hollywood couple have a blast backstage at the T-Mobile Arena in between performances from Mariah Carey, Fleetwood Mac and more.
Justin Timberlake
The singer posed on the red carpet before his performance on Saturday.
Ashley Iaconetti & Jared Haibon
Date night done right! The Bachelor in Paradise couple show PDA on the red carpet.
Luke Bryan
The "Sunrise, Sunburn, Sunset" singer kept it casual at the festival.
Iggy Azalea
The rapper poses on the red carpet.
Darren Criss
The Emmy-winning star has plenty to smile about.
Bachelor Nation
Dean Unglert, Becca Tilley, Ben Higgins, Nick Viall, Blake Horstmann, Jason Tartick, Ashley Iaconetti, and Jared Haibon unite!
Sarah Hyland and Wells Adams
The Modern Family star and her Bachelorette alum boyfriend step out a week after celebrating their one-year anniversary.
Mariah Carey
The singer sparkles onstage.
Mariah Carey and Paula Abdul
The two pose backstage.
Ireland Baldwin
The model showcase a sexy style.
Childish Gambino
Donald Glover gives the audience an eyeful.
Mariah Carey
The singer strikes a pose.
Sara Foster and Erin Foster
The look-alike sisters showcase chic looks.
Fleetwood Mac
John McVie, Christine McVie, Stevie Nicks, Neil Finn, Mick Fleetwood and Mike Campbell appear onstage.
Miguel
The singer is on fire!