The Scottish DJ is the face of the designer's Autumn/Winter 2015 fashion campaign, and unveiled a first-look image at his underwear shoot on Instagram.
Meanwhile, Emporio Armani released an image of Harris modelling items from its clothing line, as well as debuting a behind-the-scenes video.
Harris was previously unveiled as the face of Armani's Spring/Summer 2015 campaign, with images of the star modelling Armani eyewear and accessories also being released by the luxury Italian brand earlier this year.
Back in March, Harris shared a shirtless selfie and explained to fans that he was in training for his next photoshoot.
The 'Pray to God' hitmaker recently gushed about his new romance with Taylor Swift, describing her as an "incredible" human being.
The pair confirmed their relationship just in time to be named the current highest-paid celebrity couple on the planet.
Watch the behind-the-scenes video from Harris's latest Emporio Armani shoot below: