Camila Cabello and Lil Nas X got stuck in an elevator "for a good hour".

The pair were on the way to promote their collaboration 'He Knows' at gay nightclub Heart in Los Angeles when disaster struck in her apartment building, and though the two stars were "low-key terrified", they did their best to keep spirits up amongst those trapped in the small space.

Speaking to Rolling Stone magazine, Camila said: "Panic attacks were happening left and right, honey.

"People were dropping like flies emotionally, but me and Nas, we were cracking jokes — but were low-key terrified.

"We were in there for a good hour. It was crazy because it’s the elevator in my building and I walk into that elevator every day and I’ve never seen it the way I saw it that night. The mirrors were steamed up like it was a shower because it was so hot and there was no AC."

But the 27-year-old singer and her pal soon stopped joking after a stark warning from her 25-year-old pal's security team.

She said: "Nas’ security guard is like, 'I would keep the chatter to a minimum because you guys are about to start taking up all the carbon monoxide and that’s how people pass out.'

"Nas was like, 'If we weren’t f****** panicking before, we sure are panicking now.'"

However, the 'Havana' singer noted the experience brought her and Nas closer together.

She said: "It was just so crazy. It brought us closer together though. Nothing like a trauma bond during a single release."

Once they were finally released, the two singers headed to the club and were determined to have a great night.

Camila said: "We were an hour late to the club and we got there and we were like, 'We’re getting black-out drunk. This is a celebration of not just our song, but the fact that we did not get carbon-monoxide poisoning today. ' "

The former Fifth Harmony singer loved working with the 'Old Town Road' hitmaker.

She gushed: "He’s the kind of artist where it’s more than just the song. He really puts thought and care into the performance. He plays with the fans. He cares about the music video and making a statement."