Shawn Mendes’ new Calvin Klein campaign is leaving his fans and celebrities in a frenzy.

The 20-year-old singer announced Saturday he will be part of Calvin Klein’s upcoming underwear campaign and gave his social media followers a little tease with two photos of himself wearing the brand’s iconic underwear.

To top it off, his six-pack abs were on full display.

“@CalvinKlein #MyCalvins. Campaign coming this week,” Mendes captioned the Instagram post, which garnered more than 7 million likes and 400,000 comments within 24 hours. His tweets also received more than 1 million likes combined.

The brand also posted on its Instagram: “HOT OFF THE PRESS 🗞 @shawnmendes takes it to the next level in our #Spring2019 Statement 1981 cotton trunk from #CALVINKLEINUNDERWEAR.”

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The sizzling snapshots of Mendes and his chiseled chest not only caught his fans’ attention, but prompted reactions from Jennifer Lopez and Alex Rodriguez.

“Killin’ it,” Lopez commented, while her boyfriend and former baseball star wrote, “Goals!!!!!” with a thumbs up emoji.

Singer Charlie Pluth wrote, “Hahah!!! Oooh S--- !!”

“Damn,” Olympic diver Tom Daley wrote.

“Delete this before my gf sees this,” rapper Hoodie Allen wrote, to which actor Drake Bell also replied, “My gf already saw it…she has my permission.”

Fellow artists, including Teddy Geiger and Julia Michaels, also praised the “Stitches” singer.

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Fans took to social media to say the singer’s new underwear campaign was the “greatest thing that’s happened to humanity in 2019. Others reacted with gifs and memes.

Mendes joins a list of celebrities, including Justin Bieber and the Kardashian sisters, in being featured in the brand’s #MyCalvins campaign.