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Isla Fisher

Rob Kim/Getty Images

There's a fine line between really good acting and a real-life experience.

Isla Fisher revealed on Chelsea Lately that while shooting a scene for her upcoming film Now You See Me, she was stuck underwater for almost three minutes.

"I was actually drowning," she said. "Everyone thought I was acting fabulously…no one realized I was actually struggling."

The actress, who was filming a magic trick in a water tank, got into trouble when her release chain got stuck in her costume.

"Who wants to die in a swimming costume?" she joked.

But while Fisher initially made light of the near-death experience, she told Chelsea Handler that the ordeal was rather traumatic.

Yikes! Maybe next time she won't do her own stunts?