Prince George, Princess Charlotte are #WeddingPartyGoals at Princess Eugenie's ceremony

It just wouldn’t be a royal wedding without the world’s most in-demand pageboy and bridesmaid present.

For the third time this year, Prince George and Princess Charlotte have proven themselves to be #WeddingPartyGoals. The 5-year-old future king and his 3-year-old kid sister were in fine form at cousin Princess Eugenie’s wedding to Jack Brooksbank on Friday morning at Windsor Castle — the same location where, just five months earlier, they stepped up for uncle Prince Harry and his bride, Meghan Markle.

In contrast to the dark, Galactic Empire-esque frock coat he wore to Harry and Meghan’s nuptials — and the jaunty blue trousers and white tights he modeled for a family friend’s recent wedding — George suited up in navy trousers, a white button-down shirt with navy piping, and a printed sash featuring the colors of the Mark Bradford artwork used in the bride and groom’s order of service.

The children’s looks were created by Amaia Kids, a line frequently worn by Prince William and Kate Middleton‘s brood.

Per usual, Charlotte was in white — and waving. The toddler warmed hearts as she excitedly waved to crowds of well-wishers in her creamy, button-backed frock with ruffles at the collar and sleeves. Like the other bridesmaids, she wore white flowers in her pinned-back hair and a sash that tied into a bow in the back.

But even she might have been upstaged by a fellow member of the wedding party. Pageboy Louis de Givenchy is going viral thanks to nearly being knocked over by strong winds as he made his way into St. George’s Chapel. Oops.

Read more from Yahoo Lifestyle:

• Princesses Eugenie and Beatrice pose for British Vogue

• Princess Eugenie, the next royal to wed, reveals her painful medical battle in Instagram post

• Meghan Markle’s ex-husband has reportedly remarried

Follow us on Instagram, Facebook, and Twitter for nonstop inspiration delivered fresh to your feed, every day.