After her rousing performance at the iHeartRadio music festival this weekend, it would have been rather a comedown to go straight to bed and 42-year-old Jennifer Lopez clearly had no intention of hitting the hay as she continued the party at Pure nightclub inside Casars Palace.

The star showed up in a form-fitting halter neck dress and proceeded to dance the night away to the delight of the crowd looking prepared to carry on for hours as she rocked out in her revealing white and fluorescent pink ensemble, her long hair falling loose in waves over her bare shoulders.

Showing up just before 2am, the Get Right singer initially stayed buried in the VIP section, slightly apart from the bulk of the revelers but at one point, she acknowledged the crowd and sang along to her hit Dance The Night Away.

She was just one of many acts to take to the stage during the star-studded iHeartRadio music festival this weekend but Jennifer Lopez left her contemporaries firmly in the shade with a sexy and sassy performance showing that the much-loved pop diva is well and truly back to her booty-shaking best.

It was certainly her intention last night with the focus on her famous derriere, as she took to the stage in a red feathery tasseled outfit.

The 42-year-old strutted her stuff and left her backing dancers gaping in her wake as she shook her bottom - and then flashed it to her delighted backing band.

Jennifer was performing on the second and final day of the festival, which took place at the MGM Grand Garden Arena in Las Vegas.

She performed a red hot set that include her new single Papi, and other hits including Get Right, On The Floor, Let's Get Loud, Ain't It Funny and her classic, Jenny From The Block and it proved to be a busy weekend for the star who jetted in from the set of her new film Parker in Boca Raton, Florida, to perform at the event.

She was one of many acts that performed at the two-day festival, including Lady Gaga, Steve Tyler, Nicki Minaj, Nicole Scherzinger, Sting and Usher.