She joins the already cast Leonardo DiCaprio, Tobey Maguire, and Carey Mulligan in the film. Ben Affleck is also in talks to play Myrtle's lover, Tom Buchanan:
DiCaprio is pegged to play the wealthy and mysterious Jay Gatsby, while Maguire is playing Nick Carraway, who in the novel is the narrator. Mulligan is playing Gatsby's love, Daisy Buchanan, who is married to a wealthy chap named Tom Buchanan, whom Affleck would play if his deal makes.
Fisher will play Myrtle, a married woman having an affair with Buchanan. She is later killed by a speeding car, an event that leads to the book's tragic ending.
Read the full story at The Hollywood Reporter.
This article available online at:
http://www.theatlantic.com/entertainment/archive/2011/04/the-great-gatsby-isla-fisher-may-play-myrtle-in-baz-lurhmanns-film/237574/