2013 iHeartRadio Music Festival | Entertainment News, Photos, and Videos

Rebel Wilson poses backstage the 2013 iHeartRadio Music Festival on Saturday evening (September 21) at the MGM Grand Garden Arena in Las Vegas, Nev.

The 27-year-old actress was joined at the annual event by her Super Fun Night co-stars Lauren Ash and Kate Jenkinson, as well as Stephen Amell and his cousin Robbie Amell.

PHOTOS: Check out the latest pics of Rebel Wilson

“Super Fun Night starting with a private jet ride to Vegas with @JayPharoah @katejenko @lauren_ash x,” Rebel tweeted on her way there.

10+ pictures inside of Rebel Wilson, Stephen Amell, and Robbie Amell at the festival…More Here! »

Colton Haynes hits the red carpet while attending the 2013 iHeartRadio Music Festival on Saturday evening (September 21) at the MGM Grand Garden Arena in Las Vegas, Nev.

The 25-year-old actor was joined at the event by his Arrow co-stars Willa Holland and Emily Bett Rickards, who he posed with on the carpet. He also attended the iHeartRadio Village earlier in the day to present a performance.

Pretty Little Liars ladies Shay Mitchell and Lucy Hale were also in attendance at the music festival. They hit the stage to present Phoenix‘s performance.

FYI: Lucy is wearing Stella & Dot jewelry. Shay is wearing a Ralph and Russo dress, Givenchy shoes, a Jimmy Choo clutch, and a Kimberly McDonald ring. Fun fact: Her dress has real 24 karat gold pieces in it!

20+ pictures inside of Colton Haynes and others at the festival… More Here! »

Ke$ha goes all out with glitter at the 2013 iHeartRadio Music Festival on Saturday evening (September 21) at the MGM Grand Garden Arena in Las Vegas, Nev.

The 26-year-old entertainer performed her hit “Die Young” before she was joined on stage by Joan Jett to sing the classic “Bad Reputation.”

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Earlier in the month, Ke$ha hit the carpet while arriving for her performance at 1 OAK Nightclub at The Mirage Hotel & Casino.

Watch Ke$ha perform “Die Young” below!

15+ pictures inside of Ke$ha on stage, plus her second performance…More Here! »

Justin Timberlake gets the crowd excited while performing at the 2013 iHeartRadio Music Festival on Saturday evening (September 21) at the MGM Grand Garden Arena in Las Vegas, Nev.

The 32-year-old entertainer performed his hits “Sexy Back,” “Mirrors,” and “Cry Me a River” as well as his new song “TKO.” He also debuted “True Blood,” and “Only When I Walk Away,” two tracks off his upcoming album The 20/20 Experience (2 of 2).

PHOTOS: Check out the latest pics of Justin Timberlake

“Big thank you to @iHeartRadio for having us and everyone in Vegas tonight for singing with me! Had a blast,” he later tweeted.

Watch Justin Timberlake‘s full set at the iHeartRadio Music Festival below!

30+ pictures inside of Justin Timberlake performing…More Here! »

Adam Levine hits the stage with his band Maroon 5 while performing at the 2013 iHeartRadio Music Festival on Saturday evening (September 21) at the MGM Grand Garden Arena in Las Vegas, Nev.

“I unabashedly love writing and performing pop music for both myself AND everyone around me. That’s It. It doesn’t need any extra sauce,” the 34-year-old entertainer tweeted the night before.

PHOTOS: Check out the latest pics of Adam Levine

Jared Leto and his band Thirty Seconds to Mars were also in attendance at the festival that night!

FYI: Jared is wearing Zadig & Voltaire boots.

30+ pictures inside of Adam Levine and Jared Leto performing at the 2013 iHeartRadio Music Festival… More Here! »

Miley Cyrus winks and sticks her tongue out at the crowd while performing on stage at the 2013 iHeartRadio Music Festival on Saturday evening (September 21) at the MGM Grand Garden Arena in Las Vegas, Nev.

The 20-year-old entertainer performed a few songs including her new smash hit single “Wrecking Ball,” all while wearing a completely sheer outfit and nipple pasties on her breasts.

PHOTOS: Check out the latest pics of Miley Cyrus

Miley‘s performance was presented by her “SMS (Bangerz)” collaborator Britney Spears.

“I ❤️ RADIO #wecantstop,” Miley tweeted after performing.

30+ pictures inside of Miley Cyrus performing while nearly nude… More Here! »

Ian Somerhalder poses on the red carpet while attending the 2013 iHeartRadio Music Festival on Saturday evening (September 21) at the MGM Grand Garden Arena in Las Vegas, Nev.

The 34-year-old actor was joined at the event by his Vampire Diaries co-star Candice Accola, as well as The Originals‘ Claire Holt and Charles Michael Davis.

PHOTOS: Check out the latest pics of Ian Somerhalder

“Thank you to the CW for bringing me here to Vegas.I love you guys and thank you-Fans, pls thank the CW for bringing me here!!! Xo Ian,” he tweeted at the event.

FYI: Candice is wearing an Alexander McQueen dress and Valentino shoes.

20+ pictures inside of Ian Somerhalder and others backstage at the festival… More Here! »