2014 iHeartRadio Music Festival | Entertainment News, Photos, and Videos

Jennifer Lawrence and Chris Martin have been pretty stealthy with their relationship so far, but one photo has surfaced from this weekend’s iHeartRadio Music Festival in which they are featured together for the first time!

The 24-year-old actress joined her new boyfriend backstage at the concert, where he played with his band Coldplay.

PHOTOS: Check out the latest pics of Jennifer Lawrence

Jennifer was seen walking ahead of Chris, 37, as he headed to the stage for his performance. Make sure to check out the full video from the show!

FYI: Jennifer is wearing Emilio Pucci.

Jason Derulo covers up in his hoodie while posing on the red carpet at the 2014 iHeartRadio Music Festival on Friday (September 19) at the MGM Grand Garden Arena in Las Vegas.

Taylor Momsen was also seen stepping out on the carpet that night with her band The Pretty Reckless.

Jason hit the stage during the first night of the festival for a high energy performance. He showed up as a surprise guest and sang his hit “Talk Dirty.”

Taylor performed for the crowd at the village stage the next day. See photos below in the gallery!

Meghan Trainor rocks animal print while attending the 2014 iHeartRadio Music Festival held at the MGM Grand Garden Arena on Saturday (September 20) in Las Vegas.

Not only did the 20-year-old singer perform that night, she also entertained the crowd at the iHeartRadio Music Festival Village earlier in the day. Watch the video below of her performance!

PHOTOS: Check out the latest pics of Meghan Trainor

“K my life is complete. I met hilaryduff and we sang my song #allboutthatbass thank you @charissat !!❤️,” Meghan wrote on Instagram with a pic.

10+ pictures inside of Meghan Trainor performing at the iHeartRadio Music Festival…More Here! »

Colton Haynes keeps it cool in a military jacket and boots while attending the 2014 iHeartRadio Music Festival held at the MGM Grand Garden Arena on Friday (September 19) in Las Vegas.

“Watchin Coldplay kill it wit @travisheights #iHeartRadio !!! Excited to be on stage in a bit!” the 26-year-old Arrow actor wrote on Instagram before presenting.

PHOTOS: Check out the latest pics of Colton Haynes

Colton wasn’t the only CW star to be at the music festival, Adelaide Kane, Phoebe Tonkin, Gina Rodriguez, Arielle Kebbel, and Leah Pipes were also spotted enjoying the wide range of music.

FYI: Gina is wearing StyleStalker with Kenneth Cole shoes.

10+ pictures inside of Colton Haynes and Adelaide Kane at the iHeartRadio Music Festival…More Here! »

Hilary Duff looks super sexy while posing backstage during the second night of the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena on Saturday (September 20) in Las Vegas.

Other stars at the festival including Orange Is the New Black stars Laverne Cox, Dascha Polanco, and Pablo Schreiber, as well as The Big Bang Theory‘s Johnny Galecki.

“Oh hey oh #vegas ….. Your nice and hott,” Hilary tweeted that morning.

FYI: Hilary is wearing an Anthony Vaccarello dress, Christian Louboutin heels, Renee Sheppard earrings and Alexis Bittar bracelets.

Also pictured inside: Hilary walking around Toronto the day before after doing some promo for her new music.

Iggy Azalea does double duty while making an appearance at the 2014 iHeartRadio Music Festival on Saturday (September 20) at the MGM Grand Garden Arena in Las Vegas.

The 24-year-old rapper hit the stage as one of the headliners for the main show, but she also entertained the crowd at the village stage earlier in the day. Of course, she switched outfits for the two performances!

While backstage, Iggy chatted about filming the “Booty” video alongside Jennifer Lopez.

“It was very surreal and weird because we were in this really tight little black box, it had three walls and then a camera, and it was just very strange,” Iggy said. “Sometimes I have to think to myself, I’m dancing in a really really tight box with J LO! You know, I used to sing her songs in my mirror and annoy my mother.”

The night before, Iggy performed at the Music Midtown Festival in Atlanta. See the pics in the gallery below!

Lorde hits the stage for her performance at the 2014 iHeartRadio Music Festival on Saturday night (September 20) at the MGM Grand Garden Arena in Las Vegas.

The 17-year-old singer was one of the many performers on the day two of the festival. She was introduced to the stage by Chicago P.D. actress Sophia Bush.

The night before, Lorde performed at the Music Midtown Festival in Atlanta. See the pics in the gallery below!

FYI: Sophia is wearing a Monique Lhuillier dress, Christian Louboutin shoes, a Rauwolf clutch, Jennifer Fisher gold earrings, and Graziela Gems snake earrings and rings.

25+ pictures inside of Lorde and Sophia Bush attending the event… More Here! »