Kim Kardashian showcased her jaw-dropping physique in a figure-hugging black dress while attending Justin Timberlake’s invite-only show at the Fontainebleau in Las Vegas.

While enjoying a girls’ night out with her sister Kendall Jenner and longtime pal, Ivanka Trump, on Wednesday, the reality star, 43, commanded attention in her sexy knitted frock, which hugged every curve of her incredibly toned body, with an extremely low back and plunging neckline.

As the siblings made their way to their seats, next to the 42-year-old daughter of former President Donald Trump, Lenny Kravitz and FoodGod, Kardashian and Jenner appeared in good spirits as they exchanged a laugh.

For the occasion, the mother-of-four, who sparked concern over her very slim frame this fall, wore her glossy raven locks down over her shoulders.

Kardashian kept her accessories to a minimum, apart from multiple diamond rings and a silver necklace, worn backwards.

Her glamorous makeup look included a nude matte lipstick, with a darker lipliner, blush, bronzer for a sun-kissed glow and plenty of mascara.

Meanwhile, Jenner rocked a similar black gown, which she styled with matching bralette with a scallop design and strappy pair of heels.

The 27-year-old supermodel, who is five-foot-11, hovered above her half-sister, who is nine inches shorter than her without heels.

Once inside, Kardashian looked excited as she chatted with Jenner and Ivanka as they kept their eyes peeled on the stage as they waited for Timberlake, 42, to perform.

Ivanka, who sported red lipstick and her golden tresses styled in old Hollywood retro waves, looked beautiful in a strapless gown with a black top and silver sequined bottom.

Kardashian and Ivanka have been friends for over a decade, after initially bonding ‘nearly a decade ago at the Met Gala over motherhood and being new moms,’ according to Us Weekly.

At one point, Kardashian snapped a selfie with Jenner, who turned her body toward her sister and smiled at the camera.

Attendees were supporting the launch of the launch of Fontainebleau Las Vegas, which is located on the Las Vegas strip.

The 150,000-square-foot resort/casino promises a ‘new era of luxury hospitality’ with world-class dining, nightlife and entertainment.

Cher, Tom Brady and Sylvester Stallone were among the other stars celebrating the grand-opening.

The Fontainebleau towers over Vegas at 737ft-(224m) tall, boasts 3,644 ‘exquisite’ hotel rooms and suites, according to the website, and is certain to become the go-to stay for Hollywood’s elite.

At $3.7billion (£2.9billion), the Fontainebleau is second in cost to the $4.3billion (£3.4billion), 66-story Resorts World that opened in June 2021 a short walk down Las Vegas Boulevard.

It is the tallest occupiable building in Nevada and second-tallest in Las Vegas, behind the nearby Strat tower observation deck at 1,149 feet (350 meters).

The name of the 3,644-room, 737ft-(224m) tall Fontainebleau recalls Miami Beach’s icon among destination resorts, which Soffer’s family acquired in 2005. But the project in the Mojave Desert has its own lore about starts, stops and changing ownership since work began in 2007.

Catching up: Kardashian and Ivanka have been friends for over a decade, after initially bonding ‘nearly a decade ago at the Met Gala over motherhood and being new moms,’ according to Us Weekly

Stunner: All eyes were on Kardashian as she made her way through the star-studded crowd

BFF: She was spotted walking with her longtime pal, FoodGod, who has made cameos on Keeping Up with the Kardashians and its spin-offs

Confident: The SKIMS founder oozed confidence as she ran her fingers through her hair

Grand-opening: She was supporting the launch of the launch of Fontainebleau Las Vegas, which is located on the Las Vegas strip

Soffer, the Miami-based chairman of Fontainebleau Development, lost funding during the Great Recession and walked away from the project in 2009 with the building about 70 per cent complete.

Various new owners stepped in, including famous financier Carl Icahn and New York developer Steven Witkoff. The latter announced plans in 2018 to redesign and rename the resort The Drew, but progress stalled again during the pandemic.

Meanwhile, sitting idle, the hulking shell of a building with an incomplete street-front facade was occasionally used by area firefighters for high-rise rescue training. Last July, with work progressing toward opening, a smoky rooftop fire raised alarm but caused little damage.

Soffer and Fontainebleau Development reacquired the project in 2021 and partnered with Koch Real Estate Investments to finance and finish it.

He called completion ‘the fulfillment of a long-held dream and a testament to the spirit of our brand, which has stood for seven decades.’

Posing away: At one point, Kardashian snapped a selfie with Jenner, who turned her body toward her sister and smiled at the camera

Quite the trio: Jenner sat between Kardashian and Ivanka

Creating a buzz: Even in a star-studded room,  Kardashian’s presence caused other attendees to stand up and take a glance in her direction

Mingling: Ivanka mingled with a blonde woman, who placed one hand on her shoulder, before they shared a friendly embrace

Big night: Cher , Tom Brady and Sylvester Stallone were among the other stars celebrating the grand-opening

Mark Tricano, Fontainebleau Las Vegas president, told state gambling regulators last month that the resort will employ more than 7,000 workers.

The property has 1,300 slot machines, 128 gambling tables and more than 36 bars and restaurants – some featuring chefs with Miami roots.

Officials said hotel room rates for the opening started around $300 (£239) nightly.

The structure is the tallest occupiable building in Nevada and second-tallest in Las Vegas, behind the nearby Strat tower observation deck at 1,149 feet (350 meters).

The Fontainebleau was built on the site of the El Rancho hotel, which dated to 1948 and was imploded in 2000 after Soffer and condominium developer Turnberry Associates bought it.

Fontainebleau is adjacent to the newest section of the Las Vegas Convention Center, a $1billion expanse that opened in January 2021, and has a down-the-Strip view of the brightly lit Sphere concert and entertainment venue that opened in September.