Shawn Mendes says he wears make-up to cover spots.

The 17-year-old told the Kidd Kraddick Show that he often applies concealer to mask any blemishes.

He wasn't confident about it at first, but he got the green light from 'I Know What You Did Last Summer' collaborator Camila Cabello.

Mendes said: "When I was 17, my skin was hittin’ that puberty moment.

"I’m going to let you guys in on a little thing. I can’t even believe I’m talking about this right now.

"I do have pimples on my skin - but if you look closely, there’s makeup on there.

"I put that makeup on myself. The problem is...I mean, I don’t want guys to be like, 'That guy’s weird. Why does he put makeup on himself'.

“I had to ask Camila. Is this cool? Does this look alright? She said it looks fine, and I was like, 'Alright!'. 

"But it sucks to see a volcano jumping out. That was my secret. I probably shouldn’t have said that."

The duo's track 'I Know What You Did Last Summer' meanwhile features on a repackage of Mendes' 2015 debut album 'Handwritten'.

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Watch Shawn Mendes in action below: