Princess Eugenie marks second wedding anniversary with previously unseen photos

Just in case Princess Eugenie didn't already have enough cause for celebration, Monday marked the royal mum-to-be's second wedding anniversary.

The youngest daughter of Prince Andrew and Sarah Ferguson wed Jack Brooksbank at St George's Chapel, Windsor Castle on October 12, 2018.

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Eugenie has celebrated the occasion in classic millennial style: with a photo montage on Instagram.

"Been the best two years married to you and 10 years with you in total.. happy memories always my dear Jack," she wrote.

The video includes numerous unseen photos of the couple taken during their decade together.

There are numerous behind-the-scenes wedding photos, capturing the newlyweds in candid moments on their big day.

Eugenie has also included some travel snaps, one depicting the couple all rugged up and observing penguins from a boat in Antarctica.

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Among the many messages of congratulations posted on Instagram was one from Arthur Chatto, grandson of the late Princess Margaret.

Designer Misha Nonoo, a good friend of both Eugenie and Meghan Markle, also sent her wishes in a comment: "Happy anniversary love birds!"

"Dream team xxx," added model Cara Delevingne.

Eugenie and Jack's wedding anniversary comes just two weeks after the couple announced they were expecting their first child together.

The happy news was confirmed on September 25 via an official statement from Buckingham Palace and a more personal Instagram post from the princess.

"Jack and I are so excited for early 2021," she captioned a photo of a pair of bear-shaped baby booties.

Baby Brooksbank will be the Queen's ninth great-grandchild.