Jennifer Aniston make a surprise appearance in a short play "The B---h Downstairs."
She acted as the spirit of a dead dog. Even the castmembers including Kyra Sedgwick, Sam Rockwell and Nia Vardalos were also surprised according to People.com.
A source tells the website, "She's known about the show for weeks, but whether or not she could perform depended on her shooting schedule. She actually came right from the set."
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