SPENCER Matthews looked dramatically different as he showed off his body transformation on Instagram.
The Made In Chelsea legend revealed his incredible body transformation as he went shirtless to reveal his rock hard abs.
Spencer was hardly recognisable as he showed off his ripped bod in a new snap.
The reality TV star waved goodbye to his 'dad bod' as the father-of-three stunned fans with his chiselled face.
Fans could not take their eyes off his rock hard pecs as he beamed proudly in the shot.
They flocked to Instagram to congratulate him with one saying: "Amazing Spencer so much luck with the training for the race!"
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Bear Grylls added: "Well done my friend."
Spencer explained to fans the motivation behind his body revamp.
He said: "In the picture on the left, my life was spiralling out of control. It was during Made In Chelsea and I had a drinking problem. I would drink to excess almost daily and had a deluded sense of grandure. I was uncomfortable in my own skin and change felt like too much of an effort.
"I thought that because I was a prominent character on a popular TV show that things would just happen for me, not realising that any kind of real success only comes through hard graft and determination.
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"I had no routine, no motivation, no drive and no plan.
My unsustainable appetite for socialising became detrimental to my health and wellness.
"On the right, 10 years later, I’ve embraced a different lifestyle and have self-discipline and a purpose. I’ve been training religiously, weightlifting three times a week, running, not drinking and being mindful of my health."
He added: "A routine, clear plan and consistency is important. Your goals won’t achieve themselves. I used to be out of breath walking up a single flight of stairs."
Spencer is using his new found fitness for a cause extremely close to his heart as he paid an emotional tribute to his late brother Michael.
His older sibling Michael, disappeared while climbing Mount Everest in 1999 at the age of 22.
He explained: "I’m currently bang in the middle of training for the Jungle Ultra for The Michael Matthews Foundation - a 230km self sufficient foot race through the Amazon Rainforest.
"MMF was founded over 20 years ago in memory of my late brother Michael who passed away during his descent from the summit of Everest. The foundation works to provide education and safety to children in remote and underprivileged areas in rural Tanzania. We’ve helped over 7000 children so far.
"This race is challenging, but it's nothing compared to the struggles that these children would face every day without our support…
"I'm delighted to be running for a cause that means so much to me, and I hope to make Michael proud.
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"For more information on The Michael Matthews Foundation or to donate to this amazing cause, please head to the link in my bio."