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

Adam Lambert dons a low cut shirt while attending the 2013 iHeartRadio Music Festival at the MGM Grand Garden Arena on Friday (September 20) in Las Vegas, Nevada.

Later in the night, the 31-year-old singer performed onstage with legendary band Queen and Fun.

PHOTOS: Check out the latest pics of Adam Lambert

For the set, Adam performed Queen‘s hits songs, such as “Who Wants to Live Forever,” “Fat Bottom Girls,” “Bohemian Rhapsody,” “Crazy Little Thing Called Love,” and “Another One Bites the Dust.” Watch the video below!

“I can’t wait for #IHeartRadio tonight to sing with @QueenWillRock! Livestreams at: http://iheartradio.com/vegas , starting at 7pm PT! We r on @12!” Adam tweeted earlier in the day.

30+ pictures inside of Adam Lambert performing at the iHeartRadio Music Festival…More Here! »

Katy Perry dons a cute little dress while attending the 2013 iHeartRadio Music Festival at the MGM Grand Garden Arena on Friday (September 20) in Las Vegas, Nevada.

Later in the night, the 28-year-old singer bared her midriff while wowing the crowd onstage with her hit songs, such as “Roar,” “Dark Horse,” “Part of Me,” “Wide Awake,” and “I Kissed a Girl.” Check out the video below!

PHOTOS: Check out the latest pics of Katy Perry

“Ahhh that was soy fun! #iHeartRadioFestival,” Katy tweeted after the show.

30+ pictures inside of Katy Perry performing at the iHeartRadio Music Festival….More Here! »

Ashley Greene dons a sexy black dress while attending the 2013 iHeartRadio Music Festival at the MGM Grand Garden Arena on Friday (September 20) in Las Vegas.

The 26-year-old actress was joined on the red carpet by Stephen Amell and athlete Shaun White.

PHOTOS: Check out the latest pics of Ashley Greene

Later in the night, Ashley and Stephen introduced Matthew Bellamy‘s band Muse, who took the stage after Keith Urban.

“Just did a huge photo line with my fly down. Not on purpose. Dead sober. I’m 32 years old,” Stephen tweeted at the music festival.

FYI: Ashley is wearing Monika Chiang shoes.

10+ pictures inside of Ashley Greene and Stephen Amell attending the iHeartRadio Music Festival…More Here! »

Kate Hudson is a purple beauty while attending the 2013 iHeartRadio Music Festival at the MGM Grand Garden Arena on Friday (September 20) in Las Vegas.

The 34-year-old actress was at the music festival to support her partner Matthew Bellamy, who was performing with his band Muse.

PHOTOS: Check out the latest pics of Kate Hudson

Muse wowed the crowd with some of their hit songs, such as “Follow Me” and “Starlight” after being introduced by Stephen Amell and Ashley Greene.

Last weekend, Kate was spotted showing off her midriff while flying out of Rio de Janeiro, Brazil.

FYI: Kate is wearing a W. Britt ring and bracelet.

15+ pictures inside of Kate Hudson attending the iHeartRadio Music Festival…More Here! »

Robin Thicke is all smiles while performing onstage during the 2013 iHeartRadio Music Festival at the MGM Grand Garden Arena on Friday (September 20) in Las Vegas.

The 36-year-old singer was joined during his performance by Sean “Diddy” Combs.

PHOTOS: Check out the latest pics of Robin Thicke

Miley Cyrus, Keith Urban, Bruno Mars, and Justin Timberlake are some of the entertainers scheduled to perform at the music festival, which takes places annually.

Earlier in the day, Robin‘s wife Paula Patton was spotted exiting her hotel in New York City.

20+ pictures inside of Robin Thicke performing at the iHeartRadio Music Festival…More Here! »