All four of Prince Albert of Monaco's children pictured together in first public photo

The first-ever photo of all four of Prince Albert of Monaco's children has been shared by his eldest daughter in a look-back at 2021 on social media.

Jazmin Grimaldi, 29, posted a montage video of all her favourite moments from last year posted a montage video of all her favourite moments from last year. Watch the full video above.

Among the photos of outside adventures, delicious dinners and plane trips was a sweet snap of her and her half-siblings all posing together.

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Seven-year-old twins Prince Jacques and Princess Gabriella are the children of Prince Albert and his wife Princess Charlene, while Jazmin is the daughter of Albert and American Tamara Rotolo.

Alexandre Grimaldi-Coste, 18, is the son of former flight attendant Nicole Coste, who the prince met and briefly dated in 1997.

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The four siblings beamed in the photo, which is believed to have been taken around August last year, the same time Princess Gabriella "decided to give herself a haircut". (Note the seven-year-old's curiously short fringe).

That month, Jazmin also shared some snaps of her and Alexandre out to dinner with friends, celebrating his 18th birthday.

"Happy birthday my little brother Alexandre! 💋," she captioned her post in French.

The most recent sibling photo could have much to do with Princess Charlene, who reportedly encouraged Albert to bring all of his children together.

A close friend of the royals told People last year: "Charlene was really the one that was trying to pull the whole family together."

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In an interview with Harper's Bazaar in 2015, Jazmin opened up about what it was like to meet her father for the first time when she was 11, and for the news to hit the world.

"I was 14, getting ready to go to high school when it hit the media that my father had a daughter, and it was me," she told the magazine.

"I wanted that moment to connect with my father, to get to know him, and to have him get to know me.

"It's wonderful that it happened when it did, and we've been enjoying a great relationship ever since."