Proud sister Paris Hilton looks chic in a flirty black dress as she takes stylish bride-to-be Nicky for a London night out just days before her wedding

She's incredibly proud of her younger sister, who is getting married this week.

So it was with great joy that Paris Hilton was able to take her sister Nicky out for one last night on the town on Wednesday.

The heiresses were clad for a fancy evening, which was ideal as they headed out for a pre-wedding meal in London's upmarket Mayfair district, just two days ahead of 31-year-old Nicky's lavish ceremony to James Rothschild in the British capital.

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Final night out for the bride-to-be! Nicky Hilton joined sister Paris for a final night out on the town in London on Wednesday, just two days before her wedding to James Rothschild

Final night out for the bride-to-be! Nicky Hilton joined sister Paris for a final night out on the town in London on Wednesday, just two days before her wedding to James Rothschild

Looking gorgeous in bridal white, Nicky covered her slim figure in a lace mini-dress complete with intricate purple detailing across the torso, glittering in the light.

Her legs were well and truly on show thanks to the high hemline of the fitted number, and she added even more white to the look with matching lace court shoes.

The Hilton sister carried a little cream bag as she stepped through London's streets, her evening out look finished with her blonde locks coiffed into perfect curls.

However, despite the fact she's tying the knot on Friday, Nicky didn't look quite as pleased about the night out as Paris, who could barely suppress her proud grin.

Lovely ladies: Paris looked delightful in a flirty black A-line dress, while Nicky kept it clean in bridal white

Lovely ladies: Paris looked delightful in a flirty black A-line dress, while Nicky kept it clean in bridal white

Stunning display: The Hilton heiresses both flaunted their lovely legs in short dresses and heels, a bodily asset they clearly have in common

Stunning display: The Hilton heiresses both flaunted their lovely legs in short dresses and heels, a bodily asset they clearly have in common

Wow them in white with an embellished dress like Nicky

She's just one day away from marrying the man of her dreams. But it seems like Nicky Hilton couldn't wait for her impending walk down the aisle to put on a white lace dress and heels.

The bride-to-be donned a Giambattista Valli mini dress and a quilted Dior purse for a night out with her sister, Paris. The floral number was sprayed with intricate beadwork across the midsection - very similar to the creation that Amal Clooney wore just after her nuptials with George Clooney in Italy.

Nicky's dreamy confection may not be available in stores, but we've come up with some similar styles to help you nab her look. Free People's relaxed tunic brings boho vibes while BCBG's sequin number has major sparkle appeal.

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Black and white: 34-year-old Paris well and truly strutted her stuff as she showed off her fancy frock, while 31-year-old Nicky appeared more calm as they walked the streets of Mayfair
Black and white: 34-year-old Paris well and truly strutted her stuff as she showed off her fancy frock, while 31-year-old Nicky appeared more calm as they walked the streets of Mayfair

Black and white: 34-year-old Paris well and truly strutted her stuff as she showed off her fancy frock, while 31-year-old Nicky appeared calmer as they walked the streets of Mayfair

Walking like model: Paris ensured she would look picture perfect with her confident strut

Walking like model: Paris ensured she would look picture perfect with her confident strut

There she is! Socialite Paris lapped up the attention as she went along to Harry's Bar in Mayfair to help her sister have one final night out before tying the knot

There she is! Socialite Paris lapped up the attention as she went along to Harry's Bar in Mayfair to help her sister have one final night out before tying the knot

Lunge! Nicky looked impeccable in her fancy white mini dress, complete with decorative embellishments across the torso

Lunge! Nicky looked impeccable in her fancy white mini dress, complete with decorative embellishments across the torso

The 34-year-old stayed close to her sister - who is one of her bridesmaids, of course - while showing off her own striking look as the girls headed to Harry's Bar in Mayfair.

She donned a flirty A-line skater-style black dress, complete with sexy sheer panels across her chest and along the bottom of the skirt in between shiny red stripes. 

Just like the future bride, svelte Paris displayed her enviable pins - something the Hilton sisters have been clearly genetically blessed with - as she elongated them further with classic black court shoe heels.

The princess-like dress was added to with her honey gold locks worn in long ringlet curls, the lengths of her hair swept off her pretty face.

A hint for Friday? It's rumoured that Nicky - who is getting married for the second time - will have her wedding gown designed by Valentino

A hint for Friday? It's rumoured that Nicky - who is getting married for the second time - will have her wedding gown designed by Valentino

Perfect poise: Paris had a serious moment later in the evening, but she had previously admitted on social media that she was incredibly excited to be in London for Nicky's nuptials

Perfect poise: Paris had a serious moment later in the evening, but she had previously admitted on social media that she was incredibly excited to be in London for Nicky's nuptials

Mother and daughter: Paris and Nicky's mother, Kathy, was also seen outside Claridge's hotel

Mother and daughter: Paris and Nicky's mother, Kathy, was also seen outside Claridge's hotel

Mwah darling: Paris was receiving a loving kiss on the cheek from her mother as they headed home

Mwah darling: Paris was receiving a loving kiss on the cheek from her mother as they headed home

On Tuesday, Paris had revealed on social media that she had arrived in the UK, and was incredibly excited about the upcoming ceremony.

She gushed: 'Landed in London with my love. So excited for my sister's wedding!'

It was perhaps the last night out for Nicky as a single lady, and there's no doubt that her big sis Paris made it an evening to remember, judging by their recent antics at her hen party.

The sisters well and truly let their proverbial hair down in Miami in June, along with their beautiful cousins, blondes Brooke Brinson and Whitney Davis, who share a mother in Kim Richards, and brunette stunner Farrah Brittany Aldjufrie is the daughter of Kyle Richards.

Princess! Earlier in the evening, the Simple Life star had worn a huge proud sister grin on her face before the evening meal

Princess! Earlier in the evening, the Simple Life star had worn a huge proud sister grin on her face before the evening meal

Sheer delight! Her fancy dress was completed with racy sheer panels, and a huge transparent section across her back

Sheer delight! Her fancy dress was completed with racy sheer panels, and a huge transparent section across her back

Shady lady: While the sun still shone in the British capital, the US star donned a pair of oversized sunglasses

Shady lady: While the sun still shone in the British capital, the US star donned a pair of oversized sunglasses

The Hilton heiress' aunts Kim and Kyle are stars of Real Housewives Of Beverly Hills. 

Nicky, not one to turn down a chance to party, also had a princess-themed wedding shower in May.

The socialite is due to the knot with banking scion James Rothschild on Friday and guests at their Kensington Palace wedding could be in for a spectacle if the dress she wore to a catwalk event on Sunday is anything to go by.

Nicky had previously been in Paris for the Haute Couture shows, enjoying her few final days as a single woman lapping up the culture and style of the French capital.

Fun night out! Nicky later shared a snap from inside the restaurant as the sisters let down their hair just two days ahead of her wedding

Fun night out! Nicky later shared a snap from inside the restaurant as the sisters let down their hair just two days ahead of her wedding

She had worn a particularly jaw-dropping dress as she attended the Atelier Versace show during Paris Fashion Week Haute Couture, a little white frock with sheer panels which revealed much of her derriere as she climbed the steps into the Parisian venue.

However, with Valentino as the rumoured designer of her wedding dress, she is sure to have something slightly more tasteful when she ties the knot at the Kensington Palace Orangery, right next door to the Duke and Duchess of Cambridge's London home.

Nicky and James have been dating since 2011, and the wealthy Brit proposed last August while visiting Italy's Lake Como. 

This will actually mark the second wedding for Nicky, who married childhood friend Todd Andrew Meister in Las Vegas 10 years ago, only for the marriage to be annulled three months later. 

Oo-er! Nicky displayed rather a lot of her derriere in Paris on Sunday at the Atelier Versace show

Oo-er! Nicky displayed rather a lot of her derriere in Paris on Sunday at the Atelier Versace show

Loved-up: Nicky and James Rothschild are set to wed at Kensington Palace, London on Friday - they have been dating since 2011, and became engaged last year

Loved-up: Nicky and James Rothschild are set to wed at Kensington Palace, London on Friday - they have been dating since 2011, and became engaged last year

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