The youngest royals have been given many a starring role at royal weddings in recent years.
WATCH: Princess Eugenie shares unseen royal wedding photos on second anniversary
The little Princess, then three, was captured looking up admiringly at Beatrice as they waved off the newlyweds on the steps of St George's Chapel.
"The way Princess Charlotte is looking at Princess Beatrice in this picture," one fan said. Another added: "She is adorable!"
The adorable photo of Charlotte and Beatrice at Eugenie's royal wedding
Beatrice was Eugenie's maid of honour on her big day and accompanied the young bridal party out of the chapel with her mother, Sarah, Duchess of York.
While the bridesmaids and page boys wore outfits from Amaia Kids, Beatrice looked stunning in a deep blue dress by Ralph and Russo.
Sarah and Beatrice with Eugenie's bridesmaids and page boys
It seems Charlotte also shares a sweet bond with Eugenie if the official royal wedding pictures are anything to go by.
Shortly after her nuptials, Eugenie shared a snap on Instagram of her and her husband sitting with their bridesmaids and page boys in the White Drawing Room at Windsor Castle.
Charlotte was pictured throwing her head back as she giggled in the middle of the group, while Eugenie beamed at the young royal.
Edoardo and Beatrice married in Windsor last July
The couple had been due to marry in the Chapel Royal at St James's Palace in London in May last year, but their nuptials were postponed amid the coronavirus pandemic.
Instead, Beatrice and Edoardo tied the knot in a smaller wedding ceremony at the Royal Chapel of All Saints at Royal Lodge in Windsor in July 2020, which was attended by their closest family members and friends.
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