The Stitches singer took to his official Instagram page to show off three steamy new snaps.
Leaving little to the imagination, Shawn, 20, stripped down to his tight underwear.
Perching on the edge of a green sofa, the superstar provocatively parted his legs as he smouldered for the camera.
In a second shot, this time in black and white, Shawn could be seen resting against the wall as he pulled up his top.
Whipping his fans into a frenzy, the singer tensed up a storm to let his six-pack abs take centre stage.
A third snap reminiscent of the 90s saw Shawn rock a double denim look.
Ditching his t-shirt, the Canadian singer once again exposed his torso.
He completed his look by suggestively undoing his trousers.
Shawn captioned the shot: “Thank you @calvinklein #MYTRUTH #MYCALVINS.”
Within minutes the post was flooded with messages of adoration.
One fan wrote: “So hot.”
One Republic frontman Ryan Tedder laughed: “That’s the last time I loan you my Calvins.”
A third supporter gushed: “Wow. Thirst trap.”
Meanwhile, John Mayer joked: “I would have loved to comment on this, but my Fruit of the Loom contract prevents me from doing so.”
Even Demi Lovato seems bowled over by the pic.
The Daddy Issues songstress liked the shot before commenting with three fire emojis.