The 44-year-old actress, who will play a lap dancer in the film, is anxious about her upcoming role, reported Daily Star.
"I was definitely out of my comfort zone. I danced in high school and in my 20s, but I have never done stripping. This fabulous dance instructor just pulled the inner stripper out of me," said Aniston.
She would be playing the wife of a dope dealer, a role essayed by funny-man Jason Sudeikis in the film.
The film will hit the theatres in August this year.