Jennifer Lopez steps out with no underwear in Kaufman Franco gown at Parker promotional screening

Jennifer Lopez stepped out at a promotional screening of her new film Parker showing off her famous behind in an eye popping Kaufman Franco gown.

The floor length white dress featured a number of strategically placed slits which showed J-Lo had forgone underwear for her night out in Las Vegas on Thursday.

Although the Kaufman Franco designed dress was high cut at the neck, it featured clear mesh detail, giving the gown a backless look along with sexy splits either side.

J-Lo is no stranger to revealing gowns and is particularly famous for the striking Versace green and blue number she wore to the Grammy Awards back in 2000.

That dress was slit at the front down to the waist and showed off J-Lo’s curvy figure to the maximum.

But on Thursday, Jennifer Lopez even managed to outshine reality star Coco austin who unusually covered up her famous cleavage in a high necked blue psychedelic mini dress and red heels.

Coco Austin, who was without husband Ice-T, wore her blonde hair in a long haired tousled style as she stepped out on the red carpet.

Meanwhile, Jennifer Lopez was joined by her toy boy beau Casper Smart, despite rumors she paid a visit to ex-husband Marc Anthony in New York earlier this week.