Princess Eugenie Shares a Never-Before-Seen Photo from Princess Beatrice's Wedding Day

Princess Eugenie is showing love for her older sibling.

The 31-year-old royal took to Instagram today to share a new photo from her sister Princess Beatrice's wedding day last summer. In the photo, Beatrice is smiling next to her husband, Edoardo Mapelli Mozzi, as the two hold hands and beam at the camera. The royal added a second image to her post, one that captures the couple in a more casual setting, sporting rain jackets and posing for a selfie in front of a waterfall. Eugenie cheekily shared her post to mark World Bee Day, but also to pay homage to the nickname she has for her sister.

"It's World Bee Day!! 🐝🐝 A day to celebrate nature's most badass little friend with their black and yellow stripes.. But our furry little friends have to share today with my big sis Bea (🐝) who's got a little one on the way," Eugenie wrote in the caption. "Beabea and Edo huge congratulations on your news - can't wait to meet the little one. #worldbeeday #savethebees"

It was announced on Wednesday that Beatrice and her husband are expecting their first child together, who is due later this fall.

"Her Royal Highness Princess Beatrice and Mr Edoardo Mapelli Mozzi are very pleased to announce that they are expecting a baby in autumn of this year," an announcement from Buckingham Palace read. "The Queen has been informed and both families are delighted with the news."

Beatrice married the property tycoon in an intimate ceremony at Windsor Castle last July.

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