's daughter admitted she "couldn't believe it" as she issued a stern demand to the TV star.
The Yorkshire Shepherdess, 50, and the rest of the Owen family shot to fame on the series in 2018. It followed Amanda, her ex-husband Clive Owen and their nine children as they ran Ravenseat farm in the Yorkshire Dales.
The series came to an end in 2022, the same year Amanda and Clive announced their split after 22 years of marriage.
Despite their break-up, Amanda and Clive have continued to co-parent their nine children and have even started working together again on their new More 4 series, .
On Saturday (November 3), Amanda took to Instagram to mark her eldest son 's 21st birthday.
The gallery of snaps included images of Reuben from over the years, including images of him riding a pony, driving a tractor, playing a musical instrument and riding a bike.
The first image of the post featured a more recent snap of Amanda and Reuben, showing the two smiling as they posed for a selfie. The mum-of-nine sported a grey, ribbed, roll neck top while Reuben kept things casual in a black hoodie and a high-vis jacket.
Meanwhile, the final shot captured a young Reuben moments before landing in thick mud after falling off his bike.
Captioning the images, Amanda penned: "A snapshot of a few of Reuben's previous thrills and spills for him to enjoy on his 21st birthday. His love & devotion to all things horsepower is laid bare."
The post was inundated with comments of birthday well-wishes from Amanda's family and friends, but it was her eldest daughter Raven who was forced to share an urgent message.
"@yorkshireshepherdess I need you to send me the last photo please, I can't believe we don't have it framed!!" the TV star commented.
Another penned: "What an absolutely beautiful photo of mum and son." A third added: "We were watching your boy yesterday, how proud you must be. He is a beautiful human being. Happy birthday Reuben."
Echoing this, a fourth posted: "Happy 21st Reuben, hope you have the best day," as someone else remarked: "Wow how did that happen... lovely pictures. Happy Birthday Reuben."
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