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Jennifer Lawrence

Isaac Brekken/Mark Davis/Getty Images for Clear Channel

Martin Lawrence is still going strong!

On Friday night, Jennifer Lawrence, 24, was spotted backstage at the first night of the 2014 iHeartRadio Music Festival in Las Vegas, where new beau Chris Martin, 37, performed with his rock group Coldplay. The Oscar-winning actress and The Hunger Games star was seen entering the rock band's dressing room, while pop star Taylor Swift , 24, followed several minutes later, E! News has learned.

Lawrence, who is still sporting a playful bob, looked aborbs in a black studded crop top, high-waisted black skinny jeans and matching sandals.

Jennifer Lawrence

Isaac Brekken/Mark Davis/Getty Images for Clear Channel

A tweet about the two was posted on the official Twitter page of iHeartRadio.

"SPOTTED  Backstage! Wonder who she's here to see? *Cough New b/f  Cough*," the post read.

Jennifer Lawrence

Isaac Brekken/Mark Davis/Getty Images for Clear Channel

Coldplay performed several songs during Friday's concert, including "Viva La Vida," "Clocks" and "A Sky Full of Stars."

Chris Martin

Denise Truscello/WireImage

The actress and Martin have not talked about their relationship with the press. The two have been dating since at least late June, months after the singer and wife Gwyneth Paltrow announced they had separated after 10 years of marriage, E! News had learned. He and the Oscar winner share a son and daughter.

Lawrence and Martin have since been seen getting cozy together in public several times. In August, they were spotted on a romantic date in a New York vineyard, days before the actress celebrated her birthday. Earlier this month, they were seen packing on the PDA at the famous Chateau Marmont hotel in West Hollywood, California.

On Wednesday, Lawrence watched Martin perform with Coldplay at the Ace Hotel Theatre in Los Angeles.

Swift also performed at the 2014 iHeartRadio Music Festival on Friday. The other performers were Mötley CrueNicki MinajAriana GrandeZac Brown BandUsher, who was joined on stage by Chris BrownBastilleSteve Aoki and "Macy's iHeartRadio Rising Star" Before You Exit. (Check out photos!)

The 2014 iHeartRadio Music Festival continues on Saturday with performances from One DirectionIggy Azalea (will "Booty" co-star Jennifer Lopez make a cameo??), LordeParamoreWeezer50 CentCalvin HarrisEd SheeranTrain and Eric Church.

 —Reporting by Marc Malkin