They both have some of the most famous derrières in the music business.

And for the Fashion Rocks concert on Tuesday night Jennifer Lopez and Nicki Minaj pulled out all the stops when it came to daring fashion and racy dancing.

JLo was clearly the more dominant one in the fashion department by wearing a micro metallic dress with matching (and very shiny) lingerie bottoms, which was to be expected considering her latest hit is titled Booty.

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Booty-full performances: Nicki Minaj and Jennifer Lopez put on racy shows at the Fashion Rocks concert in New York on Tuesday night

Jennifer Lopez performs in a revealing outfit at Fashion Rocks

The 45-year-old spent most of her performance with her back to the audience as she shaked and danced while singing the aptly named song.

The former fly girl sported elbow high black gloves and black boots as she pinned her tinted locks into a hight ponytail.

Wearing dramatic make-up the star donned a long choker with a series of linked chains running down her chest.

Stand out: JLo was the centre of attention as she performed with a group of well dressed male back up dancers

Showtime: The 45-year-old rocked the house in a very revealing outfit

Pumping it out: The former fly girl whipped her hair around

Look at the girl: JLo got some attention from the men backing her up

Nicki, 31, also flashed her underwear in a micro skirt as she showed off her cleavage in a sequinned bra with platform boots.

With her hair in a high ponytail the Super Bass rapper pushed her backside towards the audience as she stepped up onto a prop chair.

Nicki also sang her own ode glorifying her derrière titled Anaconda, which featured – much like JLo’s hit lyrics – references to her own backside.

Snapping away: Even on stage Jennifer made sure people were taking photos of her during her performance

Feeling the music: The star looked to be quite caught up in the moment as she danced sultrily onstage

Juicy! Jennifer wasn’t afraid to flaunt her curves as she sashayed on stage

Crowd pleaser: The dancers all waved to the audience as the female members of the crew faced the wrong direction

Opening the show for the night was Usher and later Pittbull, who under the prompting of dashing host Ryan Seacrest talked about his approach to fashion.

The singer told the blonde television personality that fashion was more about the individual rather than the brand name.

Then 80s band Duran Duran hit the stage to perform their classic hit Hungry Like The Wolf.

Not to be outdone: Nicki put her own assets on full display during her rousing performance

All the boys: Male backup dancers walked shirtless around the stage during her booty-full performance

Working it: The Super Bass rapper also showed off other aspects of her voluptuous figure

Justin Bieber didn’t get the reception he may have been hoping for when he hit the stage.

But after being booed by the crowd, the 20-year-old stripped to his underwear for a segment on the star-studded Fashion Rocks show in New York on Tuesday.

The Baby singer first appeared onstage in a powder blue coat, black tank-top and dark jeans as he teamed up with model Laura Stone, 30, to introduce singer Rita Ora.

Looking out: Minaj was certain to exude her signature attitude on stage

Winning: The pop star got the crowd going as she got them pumped up

Grooving: Latrice Royale performed in what looked to be a star fish inspired outfit

Legends: Kiss performed during the star studded show

‘I don’t feel comfortable unless I’m in my Calvins. So, what’s up? Is that cool?,’ he asked Laura.

Without waiting for an answer Justin then took off his coat and jeans.

‘Is that better?’ he asked.

Singing it out: Miranda Lambert took to the stage before Rita Ora

Opening act: Usher gave a rousing performance to open the music show

Class act: Jennifer Hudson belted out a tune as supermodels walked by

Leading the pack: Pittbull took to the stage and performed with dancers wearing flapper inspired getups

‘Somewhat. Thank you, Justin,’ Laura responded.

The Boyfriend singer then pulled off his black tank-top and was left wearing only Calvin Klein black boxer briefs with a red waistband.

Justin slightly muffed his introduction of 23-year-old British singer Rita as he struck model poses in his underwear.

The host with the most: Ryan Seacrest introduced Usher while wearing a tuxedo

Rapping it out: Sean Paul, Randy Malcom of Gente De Zona, Enrique Iglesias, and Alexander Delgado of Gente De Zona, performed onstage

Classic: Simon Le Bon of Duran Duran sang Hungry Like A Wolf during the lively show

Hungry: Fans clawed at the stage during the performances

During Rita Ora’s performance, where she also wore a revealing piece of lingerie, the star was surrounded by underwear models.

But once the ladies had their turn, dashing and ripped men in nothing but briefs began walking by the British singer.

And taking advantage of the situation, Ora pinched and patted one hunky model’s bottom as he walked by.

Giving it a squeeze: Ora pinched a male underwear models bottom during her performance

Belting it out: The Band Perry performed onstage to a cheering crowd

Dancing man: Jason Derulo showed off his ripped guns to the delight of the audience

Shirtless wonder: Justin Bieber whipped off some of his clothing to introduce a performe

Bringing the show to a close was legendary rock band Kiss, who sang I Wanna Rock And Roll All Night, and were celebrating 40 years of being a band.

Fashion Rocks returned after a six-year hiatus and was held at the Barclays Center in Brooklyn during New York Fashion Week.

The show brought the worlds of fashion and music together and included performances by Rita along with Jennifer Lopez, Nicki Minaj, Usher, Pitbull, Miranda Lambert and others.

Ryan Seacrest hosted the event that was aired as a special on CBS.

Earnest: Enrique Iglesias showed off his fit figure in a low buttoned down shirt and a V-neck

The wow factor: Jourdan Dunn took to the stage with stunning results

Backstage: Paris Hilton stole a candid snap with Kiss