Britney Spears has taken to social media to admit she accidentally burned her home gym down.

The singer kicked off a workout tutorial on Instagram by nonchalantly explaining why her home gym has only a few pieces of exercise equipment.

"It was an accident…but yes…I burnt it down. I walked past the door to the gym and flames BOOM!!!!!!" she wrote on Instagram.

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"By the Grace of God the alarm went off after that and yippy hoorah nobody got hurt. Unfortunately, now I have only two pieces of equipment left lol and a one-sided mirror gym!!!!! But it could be much worse so I'm grateful. Pssss I like working out better outside anyways."

She then quickly launched into a series of exercises with arm weights.

Queer Eye star Jonathan van Ness also took to Instagram to share his stunned reaction to her casual announcement, by way of a selfie video with his mouth agape in horror.

Jonathan Van Ness's reaction to the video. Photo / Instagram
Jonathan Van Ness's reaction to the video. Photo / Instagram