Jennifer Lawrence

Jennifer Lawrence

Jennifer Lawrence supported Chris Martin at the iHeartRadio Music Festival in Las Vegas.

The 24-year-old actress turned up at the music event, held at MGM Grand Garden Arena, on Friday (19.09.14) to watch her beau perform with his band Coldplay and was even spotted sneaking into his dressing room.

A post on Twitter from from official IHeartRadio account read: "SPOTTED #JenniferLawrence Backstage! Wonder who she's here to see? *Cough New b/f #ChrisMartin Cough* #iHeartRadio (sic)."

Just two days before, the 'Hunger Games' star "couldn't take her eyes" off the hunk, 37, as she sung along to the band's lyrics during their performance at the Ace Hotel Theatre in Los Angeles on Wednesday.

A source said at the time: "She danced the entire time.

"She knew every word to every song and there was a glisten in her eye as she watched Chris perform.

"She couldn't take her eyes off him."

The blonde beauty was even said to have shared a special moment with Chris - who split from Gwyneth Paltrow in March after 10 years of marriage - when he sang the group's recent hit 'Magic'.

The source added: "Jennifer stared adoringly at Chris, both hands in the hair, dancing and singing along."

Jennifer and Chris have been dating since late June and although they've been spending a lot of time together recently, the singer has also been seeing Gwyneth for the sake of their children, daughter Apple, 10, and eight-year-old son Moses.