Kate Middleton Goes Viral on TikTok for Partying in Her 20s: Watch

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Kate Middleton and Prince William's romance began during their time at the prestigious St Andrews. Although the Princess of Wales has grown into a key member of the royal family, a TikTok account shared a collage of images of the Wales in their 20s clubbing and enjoying their youth.

"Kate Middleton before royalty (a lot of partying with William)," the social media account captioned the clip.

Fans of the Wales were enthusiastic about the throwback photos.

"More like, Kate enjoying her youthfulness and now she's a grown-up, so she has obviously matured," one user wrote.

"They were having the best days of their lives. just like any of us here during college," another added.

Kate Middleton and Prince William dated for a decade before getting married.MEGA

OK! previously reported Kate's style transformation was studied and celebrated by royal experts.

"We hadn't expected Kate and her family to turn up, and myself and a number of photographers and journalists were all standing on a press stand together," Rebecca English said in William & Kate: Too Good To Be True when discussing Kate attending William's 2006 passing out parade.

"Suddenly, out of the corner of her eye, we saw Kate and her mother and father being ushered down to the front of the seating," English stated. "I remember turning to the person next to me and saying, 'That's it, it's a done deal. This woman is going to be our future queen.'"

Kate Middleton and Prince William went from college sweethearts to the Prince and Princess of Wales.MEGA

Although the Wales didn't wed until 2011, the 2006 gathering led many royal journalists to predict the pair would walk down the aisle.

"Suddenly, the engagement whispers were starting," she continued. "There was intense pressure on William and Kate, and, short of printing thetea towels, everyone had these two walking down the aisle imminently."

Kate Middleton and Prince William are raising three children and managing their royal duties.MEGA

During the early stages of their romance, Kate sported looks that resembled the aesthetic of the early-aughts, but she quickly changed her wardrobe to reflect her future role.

“Kate’s fashion sense changed rapidly as she adjusted to life in the royal spotlight, going from girl next door to elegant future queen," English said.

"The low-slung jeans, denim skirts, and spaghetti straps of her early 20s were swapped out for smart blazers, quality suits, and refined gowns, with a more polished, Palace-ready look emerging," she explained.

Tom Quinn shared a similar sentiment in the unscripted project.

"Her clothing almost began to reflect what people saw in her character — a kind of restraint, kind of modesty almost,” Quinn noted.

“I think that did come about because William and Kate were coming towards the point where they would announce their engagement. It was Kate starting to behave in ways which would be seen more appropriate for a future queen," he added.

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Fashion expert Miranda Holder analyzed how Kate's attireshifted when she entered her 40s.

“Kate is saying, ‘Don’t focus so much on my clothes. I am here to do a role,'" Holder said in an interview. "I want to be taken seriously. I am treating this as a proper duty."

"I’m pledging my allegiance to these charities and causes. … I’m your future queen, and I’m doing the best I can,'" she added. "It’s sending out a message of business rather than fashion. … [She’s] trying to take away from the world’s — including my [own] — fixation on [her] fashion."

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