Katy Perry got fans worried after suffering from an eye problem while in the middle of her concert in Las Vegas on Tuesday.

Concert attendees took to social media and uploaded a clip of the "Teenage Dream" singer struggling to keep her right eye open while posing after a musical number.

"Katy Perry clone malfunction," a person tweeted alongside a clip of the singer pressing her ring finger against her temple in an effort to keep her eye open. Amid cheers from the crowd, the singer pressed her temple twice before finally managing to keep both eyes wide open.

Perry blinked before finally retrieving her microphone and asking the audience to make some noise for the band.

On Twitter, fans offered explanations for the weird moment. "Obviously, a malfunction clone. Just so odd," one person said.

Another agreed and said, "Those darn clones are so unreliable anymore."

The clone theory seemed quite popular as another fan commented, "Well what know what happened to the real one?"

Others took to TikTok to comment on the apparent eye glitch. "Her clone was glitching. That's scary 😳," one said while another added, "Her robot seems to glitch a lot."

The singer, who also celebrated her 38th birthday on Tuesday, is yet to comment on the matter.

Meanwhile, Perry's fiancé and "Pirates of the Caribbean" actor Orlando Bloom uploaded a selfie with the singer in celebration of her birthday.

"Each time we take a trip around the sun and get to celebrate you, I'm reminded that on this journey together and whatever the weather I'm always smiling," wrote Bloom, 45, alongside a sweet photo of him and Perry inside what appears to be a restaurant.

The "Dark Horse" singer replied in the comment section and wrote, "love you to Pluto and back."

Bloom also took to his Instagram stories and shared another selfie with the birthday girl which he captioned, "This birthday [cake emoji] This [heart emoji]."

Perry and Bloom have been together since 2018 and share a 2-year-old daughter, Daisy Dove. Meanwhile, Bloom is also father to 11-year-old son Flynn from his ex-wife Miranda Kerr.

Katy Perry
In this screengrab, Katy Perry accepts the Gracies Impact Award at the 45th Anniversary Gracie Awards on Sept. 10, 2020. Getty Images for Women in Media Foundation