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The raunchy images show Chris posing in white Calvin Klein underwear and also wearing a vintage denim jacket.
Mr Bortolin told Daily Mail Australia the photos were from a test shoot.
Impressive: The FIFO worker and father of two, 32, showed off his chiseled physique and bulging muscles in photos exclusively obtained by Daily Mail Australia
Chris will strip completely nude for the upcoming Manscapes calendar, which raises money for men's health charity.
'Being nude can be a bit confronting, so I do test shoots first to get the models comfortable,' Mr Bortolin said.
Sharing a preview of the shoot on Instagram this week, Chris wrote: 'I'll leave the rest to your imagination.