Princess Mary and Prince Frederik pictured together after 'affair' rumours denied

Regarding the rumours, the Danish Royal Family said in a statement that they "do not comment on rumours or insinuations".

Frederik married Mary, who is originally from Australia, in 2004 and the couple have four children.

Since the "affair" rumours, the Crown Prince and Crown Princess have kept a low profile.

But last week, the Danish Royal Family's Instagram posted a series of photographs of the couple posing alongside their climate ambassador Tomas Anker Christensen.

Royal fans commented below the photographs, claiming the couple showed "chilly" body language.

One fan said: "Looks chilly…"

Another added: "I have so much admiration for HRH Mary! For a long time, she’s been my favourite royal.

"So much class, wisdom, humbleness and beauty!"

Similarly, a royal watcher posted: "Mary you are the best."

Regarding the accusations, neither Crown Princess Mary nor Crown Prince Frederik have issued a personal statement.

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However, following the publication of the images in the Spanish magazine, Casanova stressed that the "malicious" rumours about an "affair" were unfounded.

The Mexican socialite even threatened to sue the magazine in a legal letter that she shared on Instagram.

Crown Princess Mary's home nation of Australia had grand celebrations for Mary and Frederik's wedding back in 2004.

The romance between Frederik and Mary was portrayed as a modern "fairytale" romance involving a prince and a commoner.