The star-studded I'm A Celebrity... Get Me Outta Here! line-up have had to overhaul their luxury lifestyles, their eating habits and their home comforts.
And after just 13 days of adjusting to their temporary home in Oz on the ITV show, a source revealed the camp mates have collectively lost more than six stone.
Hollyoaks' Jamie Lomas, 42, and boxing champion Amir Khan, 30, have shed most of the weight since entering the jungle on November 19, according to The Daily Mirror.
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'You can see a real difference': I'm A Celebrity...Get Me Out of Here! stars lost more than SIX STONE as they make 'huge diet changes' after just 13 days in the jungle (pictured Georgia Toffolo in Australia, December 2017)
'You are starting to see a real difference in the likes of Jamie and Amir. We estimate all 11 of them combined have shed around six stone,' an insider told the publication.
'It a huge diet change, but no one complains as for most of them it is the best detox diet of their life.'
Without regular supplies of processed foods such as chocolate or crisps, so it is no surprise the camp mates have already been shedding the pounds.
The reality stars have mainly been surviving on a simple diet made up of rice and beans during their time on the ITV show.
Changes: Without regular supplies of processed foods such as chocolate or crisps, so it is no surprise the camp mates have already been shedding the pounds (Jamie and Dennis Wise