He regularly shows off his muscular frame when he plays Archie Andrews on Netflix's hit series Riverdale.
And on Monday, fans saw a lot more of the Actor KJ APA during his appearance on Ellen DeGeneres show in Los Angeles.
TV host Ellen shared a cheeky nude clip the Kiwi-born star, 22, had sent her for her 62nd birthday.
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That's cheeky! Riverdale's KJ Apa accidentally flashed his bare bottom in nude clip he sent to Ellen DeGeneres for her 62nd birthday on Monday
In the clip, KJ appeared to accidentally flash his bare bottom, thanks to a reflective surface behind him.
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ShareAs Ellen introduced the clip, KJ joked: 'Is this the illicit version?'
'It's the whole version. If it's illicit I liked it,' Ellen joked, as KJ claimed: 'OK good. That's why I did it. I knew you would like it.'
'In my mind I was thinking I didn't want to do a normal video. I remember being outside on my balcony, naked, and I was face timing my friend. I looked at my reflection. I saw my a** and thought I should do this for Ellen. That's how it came about,' he explained.
However, he also joked: 'I need to tan my a** I think. I have a white a**.'
Whoops: In the clip, KJ appeared to accidentally flash his bare bottom, thanks to a reflective surface behind him
Elsewhere during the show, he expressed his frustration over being regularly mistaken as an Australian.
KJ said he believed New Zealand was a better country than Australia, joking: 'It's the most beautiful place on earth and there is nothing that can kill you there.'
He told Ellen: 'In Australia, your wife (Ellen's partner, Australian actress Portia De Rossi) will tell you there's a lot of spiders, a lot of poisonous creatures that will kill you but in New Zealand, there is no predators.'
Offended: Elsewhere during the show, he expressed his frustration over being regularly mistaken as an Australian
KJ earned his first major acting gig as Kane Jenkins on New Zealand prime-time soap opera Shortland Street from 2013 to 2015.
In 2016, he was cast as leading man Archie Andrews in Netflix's Riverdale, which is based on the Archie comic books that started in 1941.
The Ellen DeGeneres Show airs in Australia on Nine from 12pm weekdays
Leading man: In 2016, KJ was cast as Archie Andrews in Netflix's Riverdale (pictured with castmasts from left to right Camila Mendes, Cole Sprouse and Lili Reinhart)
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