Pippa Middleton is a total stunner in Kate Spade for Lady Gabriella Windsor's wedding

AOL.com Editors

Beautiful in blue!

Almost one year to the day after Prince Harry and Meghan Markle tied the knot in the wedding of the year, another royal wedding was held at St. George's Chapel at Windsor Castle. Lady Gabriella Windsor, the daughter of Queen Elizabeth's cousin Prince Michael of Kent, married Thomas Kingston in a lower key, although equally as beautiful, affair on May 18th.

In attendance was new dad Prince Harry, who welcomed his first child Archie just two weeks prior, Queen Elizabeth and Prince Phillip, as well as members of the Middleton family. While Duchess Kate and Prince William were missing from the royal nuptials, Kate's parents, Carole and Michael Middleton, attended the event alongside new parents Pippa Middleton and James Matthews.

The duchess' younger sister welcomed her first child, Arthur, in October.

For the occasion, the 35-year-old socialite and author absolutely glowed in a cornflower blue dress from one of her go-to designers, Kate Spade. She paired the springtime-ready dress with a matching headband by milliner Jess Collet, velvet pumps and a pair of sapphire Garrad earrings.

The new mom then swapped into a pink lace Erdem gown for the wedding reception, a look that definitely ranks as one of our favorites ever.

For more on the big day, watch the video above!

RELATED: A look back at Pippa's wedding day