Nicky Hilton made sure she was dressed to the nines on Tuesday night when she hosted a cocktail party at London's The Bar at Gaia with Rebecca Vallance to celebrate the launch of her new clothing collection.
The 41-year-old socialite showed off her slender figure in a red minidress from her and Rebecca's new Christmas capsule collection.
The sparkly number left her long legs on show and featured an elegant off-the-shoulder neckline.
Nicki elevated her height with a pair of burgundy heels and added sparkle with a diamond flower ring.
The cocktail party was attended by Princess Beatrice and prominent members of London's high society, including Princess Diana, her nieces, Lady Kitty, Lady Amelia and Lady Eliza.
Nicky Hilton hosted a cocktail party at The Bar at Gaia in London on Tuesday night to celebrate the launch of her new clothing collection with Rebecca Wallens.
The socialite, 41, showed off her slender figure in a red minidress from her and Rebecca's new Christmas capsule collection.
The sparkly number left her long legs on show and featured an elegant off-the-shoulder neckline, adorned with a fabric rose detail (pictured with Alice Rothschild).
Other notable guests included Downton Abbey star Daisy Lewis, British model Lady Mary Charteris, stylist Martha Ward and Gordon Ramsay's daughter Holly Ramsay.
Nicky and Rebecca announced the launch of a 31-piece Christmas capsule collection earlier this month.
The launch party was held in Bel Air the following week to coincide with Nicki's birthday and featured a surprise birthday cake for her sister. Paris Hilton.
The new range includes embellished evening dresses, sparkly party dresses and festive jumpsuits.
Rebecca's diamond bows, pearls and hand-embroidered floral appliqué details also feature prominently in the collection.
Sydney-based designer Rebecca has hailed Nicky as an “international icon” and it is her first time working with a collaborator.
He said: “I feel incredibly honored to have the opportunity to work with my dear friend Nicky Hilton, an international icon, to create a truly exceptional collection.
Together, the two of us have brought to life a range that reflects everything that celebrates timeless style, impeccable craftsmanship and femininity.
Nicki accessorized her height with a pair of burgundy heels and a diamond flower ring (pictured with Sutton Strack).
The cocktail party was attended by prominent members of London's high society, including Princess Beatrice (pictured) and Princess Diana's niece.
“These are the values we hold at Rebecca Vallance and we are thrilled to share them with Nikki throughout this collaboration.”
Revealing how he and Rebecca first crossed paths before deciding to work together, Nicky recalled: I didn't know her, but I knew this beautiful Australian shared my aesthetic: flirty, feminine and fun.
'As I was heavily pregnant I had to attend a charity event so I tried to find this perfect Rebecca dress. I was exhausted everywhere so I went into his DM. That DMK bought me a dress!'
She continued: 'We became friends from there. We both love vacations. We both have the same aesthetic. We love dressing up.
“When compiling my favorite Rebecca Vallance looks, we found that we were drawn to many of the same details and design references, which was a very exciting and fun process.”
Nicky spoke to People magazine about their collaboration: “I've been a big fan of Rebecca's designs for years. [I’ve] using them.
'Me, my mother, my sister, we all love them. So being able to collaborate with one of my favorite designers is truly a dream come true. We have a similar aesthetic, a DNA, and I think that is seen in all the pieces.
“He will fly to New York, we will meet in Europe and we will collaborate a lot on this collection.”
Other notable guests included Downton Abbey star Daisy Lewis, British model Lady Mary Charteris, stylist Martha Ward and Gordon Ramsay's daughter Holly Ramsay (pictured).
Nicky and Rebecca announced the launch of a 31-piece Christmas capsule collection earlier this month (pictured together).
It's the first time Sydney-based designer Rebecca has worked with a collaborator who hails Nikki as an “international icon”.
And Rebecca also insisted that Nicky was involved in all of her designs, calling them a “real collaboration”.
She said: 'Nicky was as involved as I was. We'll talk about shades, fabric options.
“She's a trained designer, so it's not just about putting her name on it.”
Nikki explained that the designs follow “that special holiday feel with a timeless color palette,” which she said includes some non-traditional hues.
She explained: 'In Christmas collections people often think jewel tones, but I really wanted to think outside the box. I wanted to add my favorite color, ice blue.
It's been 10 years since Nikki married her husband James Rothschild in July 2015 at Kate Middleton and Prince William's Kensington Palace residence.
The couple met in 2011 at the now ex James Stunt's wedding to Formula 1 heiress Petra Ecclestone.
They spent their first year remote and got engaged in 2014 in Lake Como before deciding to move to New York City to be together.
Nikki and James welcomed daughters Lily-Grace, eight, Teddy, six, and son Jason, two.
Nicki has been married to her husband James Rothschild for almost 10 years and married Kate Middleton and Prince William at Kensington Palace in July 2015 (pictured together in March).
Nikki and James have daughters Lily-Grace, eight, Teddy, six, and Jason, two (pictured together).
