A source told the New York Daily News newspaper: "She left for Shreveport,
Louisiana. She's going to be in boot camp for two
days to learn how to do army drills and salute properly and that sort of
thing."

In the film, Jessica's character is left devastated after finding her
boyfriend in bed with her hairdresser. It has been reported the 27-year-old's celebrity hairstylist friend Ken Paves could make a cameo appearance for
the scene.
Jessica recently revealed she was prepared to train intensively for her new
role.
She said: "I want to get really fit for this movie. I am aiming to be able
to lift weights in my highest pair of heels!"