Pregnant Princess Beatrice proved she's in no need of an early night as she enjoyed two parties this evening in London.

The eldest daughter of Prince Andrew and Sarah Ferguson, 36, looked effortlessly glamorous for her first outing to celebrate the launch of Australian designer Rebecca Vallance and American socialite Nicky Hilton’s new clothing collection. 

Dressed to impress in a statement black dress, her ensemble featured a trio of bows running down from the neckline to the waist, giving the classic midi frock an elegant upgrade.

Beatrice, who recently announced she is pregnant with her second child, was all smiles as she was photographed with Nicky, 41, and Rebecca, 44, at Mayfair hotspot Gaia.

The glamorous royal then swapped the glitzy bash for a dinner for cosmetics company Estée Lauder and Harrods, where she was joined by Princess Diana's nieces, Lady Kitty Spencer, 33, and twins Lady Amelia and Lady Eliza, 32.

Beatrice was glowing as she kept her makeup looking fresh and natural, with the young mother wearing a soft pink lip and the slightest hint of blush on her night out. 

The expecting royal finished her ensemble with a pair of pointed black heels with a white floral detail, and a matching evening bag.

Looking similarly elegant to Beatrice, Lady Kitty, daughter of Earl Charles Spencer, also opted for a little black dress, featuring a bold neckline. She teamed her glamorous frock with a sparkling diamond necklace.

Her sisters, meanwhile, proved their style credentials with fashionable dresses; Lady Eliza opted for a statement red shimmering gown, which was cinched at the waist with a matching belt.

Lady Amelia opted for a polka dot dress, featuring billowing sheer sleeves, which she teamed with elegant black heels.

All three sisters wore a smattering of glamorous makeup, while opting to keep their blonde locks in stylish straight hair-dos. 

Prior to the event at The Orangery, located next to Kensington Palace in Kensington Gardens, Beatrice attended the launch party of Rebecca and Nicky's new Holiday capsule collection in the British capital.

The cocktail party was attended by prominent members of London high society including Lady Emily Compton, Downton Abbey star Daisy Lewis, British model Lady Mary Charteris, and Alice Naylor-Leyland. 

Other notable guests included renowned stylist Martha Ward and Gordon Ramsay's daughter, internet star Holly Ramsay. 

Nicky and Vallance announced the launch of their Holiday capsule collection, comprising 31 pieces, earlier this month. 

The new range includes embellished evening gowns, shimmering party dresses, and jumpsuits that are perfect for the festive season. 

This is the first time the Sydney-based designer has worked with a collaborator, with Vallance praising Nicky as an 'international icon'. 

'Together, we've brought to life a range that reflects everything we both cherish timeless style, impeccable craftsmanship, and a celebration of femininity,' she said. 

'These are values we hold close at Rebecca Vallance, and it's been such a joy to share them with Nicky throughout this collaboration.'

Hotel heiress and the younger sister of Paris Hilton, Nicky said she was excited to launch the collection with Vallance, adding: 'No one loves dressing up for the holidays more than me. This collection celebrates the very best of a festive time of year.'

Earlier this month, Buckingham Palace announced Beatrice is expecting her second child with Edoardo Mapelli Mozzi, 40. 

They are parents to three-year-old daughter Sienna, and Edoardo also shares Wolfie, eight, with his ex Dara Huang.  

Beatrice's younger sister Eugenie, 34, congratulated her beloved 'Beabea' at the time - saying she was looking forward to 'continuing the journey of motherhood together'. 

Princess Beatrice's latest public appearance comes shortly after she stepped out with her mother, the Duchess of York, for a Ladies Lunch held to raise money for a cancer charity in honour of Sarah's 65th birthday. 

The royal mother and daughter were joined by celebrities including Elizabeth Hurley and Dame Joan Collins at the tenth annual Lady Garden Foundation Langan's Ladies Lunch on October 15 in London. 

Sarah, who is better known as Fergie, was diagnosed with breast cancer in June 2023. Just months later, in January 2024, the mother-of-two was told she had malignant melanoma, an aggressive form of skin cancer.

While she has been advised against using the phrase 'cancer free', Sarah, writing in The Sun last week, said that her 'treatment has been successful and tests show there has been no spread or recurrence.'

For the event hosted by national women's health charity the Lady Garden Foundation, whose motto is 'We are loud and we are bold', Sarah wore a £945 multicoloured blouse with a pussybow feature by Italian brand Pucci. 

She paired the distinctive blouse with a black, knee-length skirt and added a Gucci belt with a gold clasp.  Sarah completed the look with sheer black tights and patent high heels.  

The playful duchess styled her long, auburn hair with a wide headband in the same psychedelic Pucci print and sported a pair of white, 1960s-style sunglasses. 

Beatrice opted for an equally striking dark pink mini dress that was cinched at the waist and featured a flared skirt. She paired it with black opaque tights and black suede ankle boots.  

Only a little less bold than her mother, Beatrice styled her long hair with a velvet headband in colour of the season burgundy. 

While mother and daughter posed for photographs together, Sarah was also pictured with Elizabeth Hurley and Dame Joan Collins, as well as other attendees.  

The Lady Garden Foundation was launched in 2014 as the Gynaecological Cancer Fund to raise funds and awareness for various types of gynaecological cancers, hosted by charity chair and co-founder Jenny Halpern Prince.