Jennifer Aniston isn't concerned that one of her forthcoming films follows a similar plot to Mr & Mrs Smith, which starred her former husband Brad Pitt, according to reports.

The actress is due to play the female lead in Bounty Hunter, which tells the story of a journalist who is on the run from her hitman ex-husband.

The plot echoes that of Mr & Mrs Smith, which saw Brad and future wife Angelina Jolie play rival assassins that try to kill each other before joining forces.

A source told the New York Daily News: "Jennifer knows people are going to say she's copying Angelina, and she doesn't care."

Mr & Mrs Smith, released in 2005, was widely believed to be the movie that brought Brad and Angelina together.

Jennifer, who is due to team up with Gerard Butler in Bounty Hunter, is currently shooting another movie, The Baster, in New York.

The film, which is due to be released in 2010, has been adapted from a novel of the same name by Jeffrey Eugenides.

Jennifer Aniston and Angelina Jolie on film