Hafthor Bjornsson shows off weight loss as Game of Thrones star trains for boxing fight with Eddie Hall

ICELANDIC giant and Game of Thrones star Hafthor Bjornsson has shown off his weight loss ahead of the world's largest boxing match against Eddie Hall.

Bjornsson took to Instagram to show off his newly-trimmed physique after beginning to train to enter the ring.

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He posted a half-naked snap of his towering body enabling his 3.2million followers to see the results of a change in regime.

It was captioned: "Starting to see some good progress. Hope you guys are all staying motivated at this time and continuing to strive towards your goals!!"

The man nicknamed 'Thor' has already lost over a stone in just a matter of weeks.

At the end of May, he shared another progress pic with details of how he lost an incredible 40lbs in just three weeks.

He said: "Killer morning session! body weight 188kg. When I started this journey I weighed 206kg."

The strongman superstar's hotly-anticipated fight with Brit Eddie Hall is still over a year away but both men are putting in the hard yards now.

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The bout was only confirmed last month after Bjornsson - who played Ser Gregor Clegane in Game of Thrones - called out his long-time rival.

The Icelandic heavyweight flexed his muscles by setting a new world record deadlift of 501kg on May 2. 

Back then he topped the scales at more than 32 stone after gorging on over 10,000 calories a day to bulk up for the lift.

He immediately called out Hall - the previous record holder - and the gigantic pair are set to face off in Las Vegas in September 2021.

Bjornsson won World's Strongest Man in 2018 but appears to have retired from WSM competitions after a war of words with nemesis Hall.

Hall became the first British winner of the comp for 24 years in 2017 but was hit by "cheating" claims from 'The Mountain'.

But after the Brit shared unseen footage from the 2017 event in an attempt to prove there was no foul play, Bjornsson said he would "probably never compete" again. 

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Hall has undergone a similar physical transformation as both men look to settle their disputes in the ring.

The 32-year-old Brit has watched the weight drop off as he puts himself through his paces - even undertaking tethered swims - and showcased a stunning five stone weight loss in the last three years.

'The Beast' has vowed to "rip his f***ing head off" when he fights 6ft 9in Bjornsson next year.