New father Prince Harry joins the Queen to celebrate Lady Gabriella Windsor's wedding

The Duke of Sussex and the Queen joined guests at the wedding of Lady Gabriella Windsor to financier Thomas Kingston at Windsor castle today.

New father Prince Harry left his wife Meghan Markle and baby son Archie at home to attend the wedding. He arrived with his uncle and aunt, the Earl of Wessex and the Princess Royal, who was joined by her husband Vice Admiral Timothy Laurence.

Prince Harry arrived alongside actress Lady Frederick Windsor, the wife of Lord Frederick Windsor, who is the son of the Queen's first cousin Prince Michael of Kent.

Prince Harry's attendance was something of a surprise as he was not expected to attend due to the recent birth of this son.

The Queen and Prince Philip also attended the wedding.

The Duchess of Cambridge's sister Pippa Middleton and Downton Abbey creator Julian Fellowes were also in attendance.

Pippa and Mr Fellowes were among the first guests to arrive today for the wedding at St George's Chapel.

The service was conducted by the Dean of Windsor, the Right Reverend David Conner.

Lady Gabriella, the daughter of Prince and Princess Michael of Kent, is the Queen's first cousin once removed and 52nd in line to the throne.

She married financier Thomas Kingston in the third wedding of members of the royal family in the 15th-century venue in less than a year following the star-studded nuptials of the Duke and Duchess of Sussex last May and Princess Eugenie and Jack Brooksbank in October.

The Duke of Cambridge, president of the Football Association, was not present at the wedding due to the FA Cup final between Manchester City and Watford on Saturday evening.

Lady Gabriella’s wedding dress was a bespoke design by Luisa Beccaria.

It was made of lace, embroidered with flowers and embellishments. Its blush shade came from layers of tulle and organdie beneath the lace, which created the body of the gown.

The skirts fanned out into a long train. Her veil was made from layers of white tulle, together with embroidered flowers.

The Bridesmaid and Pageboy outfits were also designed by Luisa Beccaria. Bridesmaids wore cream dresses with blush underlays and sashes, with flower rings in their hair to echo the bridal bouquet.

Pageboys wore cream shirts and knickerbockers. Their shoes were by Papouelli.

Lady Gabriella wore a Russian Fringe style diamond tiara also worn by her grandmother, HRH Princess Marina, Duchess of Kent, and her mother, HRH Princess Michael of Kent, on their wedding days.

Lady Gabriella’s bouquet featured a creamy ivory ‘Ella’ rose by David Austin, named for the bride, and myrtle, which has formed part of many Royal wedding bouquets in a tradition started by Queen Victoria.

Other flowers incorporated included Juliet roses, Lily of the Valley and white and apricot sweet peas.

Mr Kingston’s Best Men were Mr Benjamin Crow, Mr Daniel Crow and Mr Jamie Campbell.

The Bridesmaids were Miss Isabella Windsor, Miss Maud Windsor, Miss Leonora Weisman, Miss Aurelia del Drago, Miss Eliza Goldsmith and Miss Emily Conolly.

The Pageboys were Master Frederick Murray, Master Rafferty Murray and Master Karim Khawaja.

Miss Estella Taylor, Miss Jessie Conolly and Miss Hannah Conolly were Special Attend.

Lady Gabriella, 38, who is known as Ella, had been dating Mr Kingston for a number of years when he proposed last summer.

Her father, Prince Michael, is the Queen's cousin.

Not a working royal, she is employed as an arts and travel director for brand company Branding Latin America, based in Knightsbridge, London.

Mr Kingston is a director of Devonport Capital, which specialises in providing finance for companies in "frontier economies" and is a close friend of Pippa Middleton.

Mr Kingston is a close friend of Pippa Middleton with the pair seen out and about together on numerous occasions.

He attended her wedding to James Matthews in May 2017, accompanied by Lady Gabriella.

Tomorrow, the Duke and Duchess of Sussex celebrate their first wedding anniversary following the arrival of baby Archie.

Harry and Meghan wed on May 19 last year at St George's Chapel in a glittering ceremony attended by royalty, celebrities and members of the public.