The beauty opted for further accessorising the stylish number with a pair of silver diamond earrings.

She styled her luscious blonde locks in voluminous waves for the evening and adorned a flawless palette of makeup.

Nicky Hilton turned heads as she left the Hotel Martinez during the Cannes Film Festival on Tuesday evening

The socialite, 40, looked nothing short of sensational in a custom blue sequin embellished floor-length gown by Rebecca Vallance

It comes after Nicky looked as stylish as ever while attending Patricia Field and Lara Eurdolian’s senior dog rescue runway show at Flying Solo in New York City last month.

The fashion designer wore a chic cropped blazer with black jeans and was joined by her mini-me daughter Lily-Grace, six.

Paris Hilton‘s sister — who shares Lily-Grace with her banker husband James Rothschild, 38 — teamed the outfit with a black lace slip dress as well as monochrome heels.

Her white blazer with a black trim and large crystal buttons also featured a show-stopping large black bow that added another layer of sophistication to the look.

The show, hosted by Eurdolian in celebration of her Pomeranian Charlie’s 18th birthday, featured more than a dozen pups, who sported designer wear to benefit local animal shelters and spotlight senior dogs that need adoption.

Nicky’s blonde tresses were pinned up for the occasion, with a few strands left to frame her face.

Meanwhile, Lily-Grace looked adorable in a long-sleeve top, a tan pleated skirt, black leggings and Converse trainers.

The dogs at the show wore clothes designed by James Suozzi for costume designer Patricia Field, famous for dressing the cast of Sex and the City.

The stunning ensemble boasted an off-the-shoulder design, silver bows at the bust, a sparkly sequin embellishment all over, and a satin blue train

Cannes is the world’s biggest film festival, first conceived in 1939 as an alternative to the then-fascist-influenced Venice Film Festival.

It has been held annually since 1946 except in 1948 and 1950, when it was cancelled due to lack of funds.

The festival is known for its carefully selected programme of films that have gone on to Oscar glory or launched the careers of directors like Quentin Tarantino.

Cannes’ top prize is the Palme d’Or, or Golden Palm, whose past winners include Taxi Driver, Apocalypse Now, Pulp Fiction, The Pianist and Parasite.

Jane Campion became the first female director to win in 1993 with The Piano, followed by a nearly three-decade gap until Julia Ducournau received the award for Titane in 2021.

The beauty opted for further accessorising the stylish number with a pair of silver diamond earrings

She styled her luscious blonde locks in voluminous waves for the evening and adorned a flawless palette of makeup

The beauty seemed in good spirits as she struck up a pose for the camera

Justine Triet became only the third female director to take the prize last year with Anatomy of a Fall.

There is also an honorary Palme d’Or, which is awarded in recognition of notable bodies of work, with past recipients including Harrison Ford, Jane Fonda and Clint Eastwood.

There are two honorary winners this year: George Lucas of ‘Star Wars’ and ‘Indiana Jones’ fame, and Japanese animation legend Studio Ghibli, the first group to receive the prize.

Other awards include the Grand Prix, jury prize, best director, best actor, best actress, best screenplay and best short film.