Princess Beatrice and pregnant Princess Eugenie break cover as they lead star-studded guest list at Poppy Delevingne's 40th birthday party

Princess Eugenie bared her baby bump in a tight little black dress for the birthday bash as she arrived with her long-term husband, Jack Brooksbank. 

Buckingham Palace announced the couple's pregnancy at the start of the week, and confirmed that King Charles is "delighted" to have another great-nephew on the way.

"August (aged five) and Ernest (aged two) are also very excited to have another sibling join the family," the statement read. 

The couple sweetly walked hand-in-hand for their ultra-rare night out on the town. 

The public appearance comes amid ongoing controversy over her parents' friendship with convicted paedophile Jeffrey Epstein. Andrew and Sarah have since both been stripped of respective titles. 

Eugenie paired her figure-hugging dress with a glitzy metallic blue coat that was the perfect statement accessory for the special occasion. 

The royal fashioned her hair in an up-do and added another pop of colour with a pair of red pointed toe heels. 

Eugenie was all smiles as she pictured later in the evening. The royal was previously seen at a press day in Soho on Thursday for a baby and children's shopping and pampering event after announcing her pregnancy earlier in the week. 

Eugenie's sister Princess Beatrice also brought her husband Edoardo Mapelli Mozzi as her plus one to the A-list event. 

The long-term couple matched in tan jackets for the night, with Eugenie looking stylish in a coat over a pair of knee-high black boots.

Engaged superstar couple Taylor Swift and Travis Kelce are in London! 

The Grammy-winning singer and her NFL beau touched down in the city for a big night with other global A-listers and royalty. 

Taylor and Travis went public with their relationship in September 2023. They announced their engagement in August 2025. 

The couple walked hand-in-hand together in their matching blazers. Taylor wore her jacket over a sweet floral midi-dress and her signature red lip. 

The singer is long-term friends with the birthday girl's younger sister, model Cara Delevingne, who even appeared in Taylor's Bad Blood music video back in 2014. 

Nicky Hilton Rothschild stepped out in a glittering sequin skirt and top set, complete with a statement feather jacket for the festivities. 

The socialite and member of America’s famous Hilton family currently lives in London with her husband, James Rothschild, and their three children. 

"It was really fun being based here and just being able to hop on a train or take a quick flight to Milan and hang out with my sister,” she told HELLO! in March.

Actress Lily James, of Cinderella and Mamma Mia! Here We Go Again fame, rugged up in a large coat for the evening. The star styled her statement outerwear with classic pointed toe heels and a black bag to match. 

Cara Delevingne, 33, was there to celebrate her sister's big day in style! The model, who has also starred in films like Suicide Squad and Paper Towns, suited up for the occasion with the perfect statement accessory: a pair of tinted sunglasses. 

Elizabeth Hurley's 24-year-old son, Damian Hurley, showed up for the birthday bash in a bold silver set with a sheer top beneath. 

The young model is Elizabeth's only child with her ex, American businessman and film producer, Steve Bing.

Princess Maria-Olympia of Greece and Denmark, who is also a fashion model, was all smiles for the evening as she rugged up in a velvet coat. 

Pretty in pink! Once the coat came off, the fashion model revealed a bright pink mini dress beneath. 

Actress Jaime Winstone, of Kidulthood fame, dazzled in a galactic-inspired look with shiny silver boots and a matching silver headdress. 

The star's ensemble was covered in sequin star shapes. 

Mick Jagger's 34-year-old model daughter Georgia May Jagger looked runway ready in a sequin mini dress. 

Georgia is one of four children the Rolling Stones frontman shares with his ex, Jerry Hall. 

Lady Mary Charteris and Alice Naylor-Leyland both glittered in sparkling looks for the night. 

Australian movie star Isla Fisher got the sequin memo. The actress had her signature red tresses styled in an up-do for the star-studded occasion. 

It's Australian director Baz Luhrmann, who is behind blockbusters like Moulin Rouge!, Elvis, The Great Gatsby, and the 1996 version of Romeo and Juliet starring Leonardo DiCaprio and Claire Danes! 

The director rocked up in jeans and a pair of red sunglasses for the birthday bash in London. 

Model Alexa Chung put a glitzy spin on the iconic little black dress. The star paired her glittering gown with matching black shoes and minimal accessories. 

The birthday girl stunned in purple for her special night. Poppy Delevingne opted for a bold purple jacket over a sequin look that peeked out underneath. 

Emma Weymouth, Marchioness of Bath kept it classic in a monochrome ensemble. The 40-year-old is married to Ceawlin Thynn, 8th Marquess of Bath.