Much to the delight of his three thousand followers on social media site, Instagram, his toned physique and lack of clothing was a right royal hit.
Using the handle @arnchatto on the picture sharing site, the young royal shows off his enviable lifestyle.
Wearing her pink tresses down and straight, the 33-year-old was seen minus her bandmates, brothers Jack and Luke Patterson.
The hitmaker pulled out all the stops after she and her co-stars were nominated for British Single of the Year and British Video of the Year.
The hunky 18-year-old is the son of Lady Sarah Chatto and counts Prince William and Harry as his cousins.
She seemingly went braless under the ruffled top, highlighting her slender frame and toned arms.
Lady Sarah Chatto is the Queen's niece Nonetheless, Sarah maintains a close relationship with the senior royals, including her aunt, the Queen.
The respect and affection she has for the monarch was clear to see in the BBC documentary in honour of Her Majesty's 90th birthday in 2016, and it appears the feeling is mutual.
Following her graduation she worked as a wardrobe assistant on , where she met her husband Daniel Chatto, who had a small role in the film.
The couple shunned a lavish royal wedding in favour of a low-key service at St Stephen's Walbrook church in July 1994, with Sarah wowing in a Jasper Conran gown and the Snowdon Floral Tiara.