A video of Princess Kate calling Prince William "so sexy" in his uniform has resurfaced and is going viral

The Prince and Princess of Wales are undoubtedly the most talked-about couple in the world, with the popular pair credited with getting the royal family through the past few turbulent years.

According to experts this is chiefly down to their relatability, with the couple famed for their determination to lead a normal life. And from their relatable parenting struggles (and their willingness to talk about them) to their naughty nicknames for each other, these two never fail to get the world talking. 

Despite their open approach, members of the public are still craning to know what happens behind Palace doors, and experts and lip readers make it their mission to find out.

From Prince William telling his bride how happy she looked after their ceremony, to the sweet words he said to her father, Michael Middleton, these conversations revealed by lip reading are a regular occurrence - and they never fail to go viral.

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This week, it was the Princess of Wales who made news, as one lip reader featured in the documentary Royal Wives weighed in on what she said during William’s 2006 RAF graduation.

According to The Mirror, the lip reader claims Kate was a fan of then boyfriend William’s look at the graduation, saying: "I love him in uniform, he’s so, so sexy."

The story is unsurprisingly going viral, with the Wales couple's relatable side making them increasingly popular - something royal experts put down to Kate.

"With Catherine at his side, the prince seems more assured, their chemistry clear for all to see," explained royal expert Robert Jobson in his book, William at 40. "Her influence over William, whose presentation in the past used to be somewhat stiff and a little nervy, has helped him become more relatable, to be more himself...His sense of humour and warmth is now visible."

Royals - they're just like us!