Jennifer Lopez and Nicki Minaj Go Head-to-Head in an Epic Showdown

Battle of the Booty! Jennifer Lopez wows as she reveals her derriere… while Nicki Minaj is all front at Fashion Rocks

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.

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

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