Princess Eugenie is reflecting on the wedding day of her only sibling! The 30-year-old royal's older sister, Princess Beatrice, married Edoardo Mapelli Mozzi in a secret ceremony on Friday, July 17. Now, on Monday, Eugenie shared the most personal of the royal tributes to Beatrice and Edoardo.

Princess Eugenie's tribute to Princess Beatrice and her wedding

Eugenie paid tribute to her sister, with whom she's noted to share a close bond, on her personal Instagram page. "Couldn't Bea happier (get it)," she began jokingly, with the inclusion of a bumblebee emoji.

She then opened up about the meaningful experience: "What a complete joy and privilege to watch you, my beautiful big sister, walk down the aisle to dear Edo. I am so proud of you and I'm so excited to support you in the next chapter of your life.

"We are going to have so much fun together," she added, perhaps looking ahead to decades of time spent between the siblings and their husbands. "Happy wedding day to you both xxxx," the tribute concluded.

Princess Eugenie shares Beatrice & Edoardo's wedding photos

Eugenie's tribute post featured the series of four wedding pictures that Buckingham Palace has officially released in the days that have followed the ceremony. But none of these four photos has included any of Beatrice's immediate family members.

RELATED: Royal Family Reacts to Princess Beatrice's Surprise Wedding

Though it wasn't really in doubt, Eugenie's Instagram tribute also confirmed that she was, in fact, at the wedding. There's been some uncertainty on the exact guest list, but we know that Prince Andrew and Sarah Ferguson were in attendance, as were Eugenie and her husband Jack Brooksbank.

But the Queen and Prince Philip are the only family members to appear in a photo so far. The Royal Family, meanwhile, has said that the ceremony was limited to the "closest family." Beatrice's wedding was also the royals' first since Eugenie married Jack back in October of 2018. Prince Harry and Duchess Meghan also tied the knot earlier that year in May.