Queen Elizabeth II and Prince Philip arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (Steve Parsons/Pool via AP)

LONDON (AP) — Queen Elizabeth II and other royal family members have gathered at St George's chapel in Windsor for the wedding of the daughter of the monarch's first cousin.

Lady Gabriella Windsor's marriage to Thomas Kingston Saturday marked the third royal wedding at the 15th-century venue in less than a year after the nuptials of the Duke and Duchess of Sussex last May and Princess Eugenie and Jack Brooksbank in October.

Prince Harry left Meghan at home with newborn son Archie and arrived with his uncle and aunt, Prince Edward and Princess Anne.

The bride's gown was designed by Luisa Beccaria, while the monarch wore a pink A-line coat, and a lilac and pink silk dress by Stewart Parvin.

The bride is the daughter of Prince and Princess Michael of Kent.

Queen Elizabeth II and Prince Philip arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (Steve Parsons/Pool via AP)
Britain's Sarah, Duchess of York, left, waves as she arrives with Princess Beatrice, center, and Edoardo Mapelli Mozzi for the wedding of Lady Gabriella Windsor and Mr Thomas Kingston at St George's Chapel, Windsor Castle in Windsor, Saturday, May 18, 2019.. (AP Photo/Frank Augstein, Pool)
Queen Elizabeth II arrives for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (Steve Parsons/Pool via AP)
Bride, Lady Gabriella Windsor, arrives for her wedding to Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Bride, Lady Gabriella Windsor, arrives for her wedding to Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Bride, Lady Gabriella Windsor, arrives for her wedding to Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Bride Lady Gabriella Windsor arrives for her wedding to Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Thomas Kingston, right, arrives for his wedding to Lady Gabriella Windsor at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Thomas Kingston, right, arrives for his wedding to Lady Gabriella Windsor at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Thomas Kingston, right, arrives for his wedding to Lady Gabriella Windsor at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Britain's Queen Elizabeth II, right, and Prince Philip, center, enter the chapel for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Britain's Queen Elizabeth II, left, and Prince Philip arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Britain's Queen Elizabeth II, left, and Prince Philip arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Thomas Kingston, right, arrives for his wedding to Lady Gabriella Windsor at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Thomas Kingston arrives for his wedding to Lady Gabriella Windsor at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
From front row right, Britain's Prince Harry, Lady Frederick Windsor, Princess Anne, and Prince Edward arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Britain's Prince Harry, right, speaks with Lady Frederick Windsor as they arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
From front row right, Britain's Prince Harry, Lady Frederick Windsor, Princess Anne, and Prince Edward arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Britain's Prince Harry, center right, speaks with Lady Frederick Windsor, center left, as they arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. From left is Sir Timothy Laurence, Prince Edward and Princess Anne. (AP Photo/Frank Augstein, Pool)
From front row right, Britain's Prince Harry, Lady Frederick Windsor, Princess Anne, Prince Edward and Sir Timothy Laurence arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
Britain's Prince Harry, second right, arrives with Lady Frederick Windsor, center, and Princess Anne, left, for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
From front row right, Britain's Prince Harry, Lady Frederick Windsor, Princess Anne, and Prince Edward arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
James Matthews, second left, and his wife Pippa, center, arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)
James Matthews, second left, and his wife Pippa, third left, arrive for the wedding of Lady Gabriella Windsor and Thomas Kingston at St George's Chapel, Windsor Castle, near London, England, Saturday, May 18, 2019. (AP Photo/Frank Augstein, Pool)