Princess Anne joined by Princess Beatrice and Edoardo for night out in London

Princess Anne  at Inauguration Of The OWO Whitehall
Princess Anne attended the Inauguration Of The OWO Whitehall (Getty)

The Princess Royal was joined by her niece, Princess Beatrice and her husband, Edoardo Mapelli Mozzi for a glamorous night out in the capital.

Princess Anne, 73, dressed in a blue satin polka dot skirt suit officially opened The OWO – Whitehall's former Old War Office – following a six-year renovation.

Before officially unveiling a plaque to commemorate the inauguration, Anne met with representatives from the Hinduja Group, who have spearheaded the project.

Meanwhile, Princess Beatrice, 35, and property developer Edoardo, 39, enjoyed a date night at the ceremony, and posed for photographs on the opulent marble staircase.

Beatrice looked elegant in a floral Erdem dress with a black blazer and matching heels, while her husband of three years, donned a blue suit.

DON'T MISS

The couple celebrated their daughter Sienna's second birthday last week, with Edoardo sharing a rare photograph of the tot.

Guests at The OWO's inauguration were treated to special live performances by Italian tenor Andrea Bocelli and composer Lord Andrew Lloyd Webber.

Princess Anne officially opened the building
Princess Anne officially opened the building (Getty)
Princess Anne meet representatives from the Hinduja Group
Princess Anne meet representatives from the Hinduja Group (Getty)

The architectural landmark opened to the public for the first time in the summer and features the UK's first Raffles Hotel, in collaboration with New York-based designer, Thierry Despont.

Lord Andrew Lloyd Webber and Andrea Bocelli perform at the inauguration of The OWO
Lord Andrew Lloyd Webber and Andrea Bocelli perform (Getty)

It also includes 85 private residences, nine restaurants, three spars, Guerlain's first London spa and active wellness by Pillar Wellbeing.

Princess Beatrice in patterned dress and overcoat with Edoardo Mapelli Mozzi
Princess Beatrice and Edoardo Mapelli Mozzi joined Beatrice's aunt Princess Anne at the opening (Getty)

Earlier today, the Princess Royal carried out an investiture at Windsor Castle, including presenting the Queen's Gallantry Medal to Lukasz Koczocik, who helped tackle the Fishmongers’ Hall terror attacker.

Mr Koczocik, 43, was one of four men who confronted convicted terrorist Usman Khan during the attack in November 2019.

LISTEN: Why Prince George, Princess Charlotte and Prince Louis go to school on Saturdays