Lady Louise Windsor: Royal family's 'secret weapon' seen partying with her university boyfriend as she turns 21

- often described the Royal family's "secret weapon" - is snapped partying with her boyfriend as she celebrates turning 21.

The young , who is 16th in line to the throne, is said to have been dating Felix da Silva-Clamp for some time after meeting at in , just like how and started their famous relationship.

Lady Louise, who recently entered her third year studying English, is pictured partying with friends, showing off her moves on the dance floor and snapping selfies with Felix at a fundraiser for the university's drama society earlier this year.

The daughter of Edward and Sophie, Duke and Duchess of Edinburgh, looks particularly cosy with Felix, as the images show the duo with arms wrapped around each other, gently placing their heads together. Another pictures shows Lady Louise snuggling up to Felix, placing her hand on his chest and her head on his shoulder.

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Sources say Felix, whose dad is a solicitor, gets on well with Lady Louise's parents. It is understood he works part-time at an ice cream parlour in St Andrews while undertaking his studies.

Lady Louise, meanwhile, is said to have worked at a garden centre in the summer of 2022 before embarking on her higher education. Despite her royal status, it is thought the young woman helped out on the tills, greeted customers, and pruned and potted plants at the garden centre.

One customer said: "She is a really modest and sweet young woman who is polite and attentive to customers. She seemed to be loving the job. You'd never imagine the Queen's granddaughter would take on a role working behind a till." Another added: "The staff seemed to adore her. It's not every day you buy your begonias off a royal."

Lady Louise's four-year English Literature degree programme includes the option to study a semester abroad, it is reported. The royal turns 21 today. In 2003, she was delivered by emergency Caesarean section due to placental abruption, which caused severe blood loss to both child and mother Sophie. Louise was transferred to a neo-natal unit in St George's Hospital, Tooting, south London, as a precaution but was soon discharged and, in April 2004, was baptised in the Private Chapel of Windsor Castle.

Felix was also born in London, but went to Melbourne Grammar School and his mother, who works for the World Health Organisation's mental health gap action programme, currently lives Down Under. It has been reported Lady Louise is keen to jet off to for her final year - with Macquarie University at the top of her list.

Despite being cousins with Princess Beatrice, Princess Eugenie, Prince William and , Louise uses the title "Lady" rather than "Princess". She was not made a princess at birth because her father, Prince Edward, wanted to shield her from the pressures of a life in the public eye.

Speaking to The Sunday Times in 2020, her mother Sophie explained: "We try to bring them up with the understanding that they are very likely to have to work for a living. Hence we made the decision not to use HRH titles."