Katy Perry's BRIT Awards Back-Up Dancer, Dressed As a House, Tumbles Off Stage -- See the Best Fan Reactions!

The pop star's performance at London's O2 Arena didn't go as smoothly as planned.

Is "House Dancer" the new "Left Shark?"

Katy Perry wowed the crowd at the BRIT Awards at the O2 Arena in London, England, on Wednesday, performing her new hit, "Chained to the Rhythm," with Skip Marley. Although her performance appeared flawless, some fans caught a glimpse of an onstage oops by one of her backup dancers. Naturally, they took to Twitter to comment on the hilarious choreography misstep.

WATCH: Katy Perry's Exes React to Her Super Bowl Halftime Show Performance

Much like her Super Bowl XLIX halftime show, one of Perry's dancers stole the show. But this time it wasn't someone dressed as a shark -- they were dressed as a giant white house.

"Katy Perry's backing dancer falling off stage," wrote one KatyCat, fittingly accompanying her tweet with the crying face emoji. "Oh I am weak, this is left shark all over again."

Another chimed in, tweeting, "I am crying the House fell off the stage."

RELATED: Get to Know Left Shark & All of Katy Perry’s Hunky Backup Dancers

See more funny reactions below!

It's OK, Left Shark. You're the OG showstopper.

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