In the 1999 film 'Fight Club', who plays the role of Marla Singer?

'Fight Club' is a 1999 American film directed by David Fincher, and starring Brad Pitt (Tyler Durden), Edward Norton (the Narrator) and Helena Bonham Carter (Marla Singer). It is based on the 1996 novel by Chuck Palahniuk.

The narrator (Edward Norton) is an automobile company employee who travels to accident sites to perform product recall cost appraisals. His doctor refuses to write a prescription for his insomnia and instead suggests that he visit a support group for testicular cancer victims in order to appreciate real suffering. By attending the group, the narrator feels distraught at the condition of these ill fated people and breaks down. He is then able to sleep soundly and subsequently fakes more illnesses so he can attend other support groups in order to get out his pent up emotions through crying. The narrator's routine is disrupted when he begins to notice another impostor, Marla Singer (Helena Bonham Carter), at the same meetings and his insomnia returns.

Helena Bonham Carter (born 26 May 1966) is an English actress. Known for her roles in blockbusters and independent films, particularly period dramas, she has received various awards and nominations, and as of 2023 these include a 'British Academy Film Award' and an 'International Emmy Award', in addition to nominations for two 'Academy Awards', four 'British Academy Television Awards', five 'Primetime Emmy Awards', and nine 'Golden Globe Awards'.