Movie bosses behind the Twilight franchise are suing the makers of a documentary about the city featured in the films - alleging the cover art is too similar to their own DVD release.

Executives at Summit Entertainment have made a documentary about Forks, Washington to correspond with the DVD launch of their latest blockbuster - The Twilight Saga: New Moon, next month.

But a new lawsuit alleges the release of Twilight in Forks: The Saga of the Real Town has been marred by a similar documentary from Topics Entertainment, also about the area where the vampire stories are played out on the big screen.

Lawyers for Summit have filed court papers alleging the Topics film, Forks: Bitten by Twilight, features cover art that is too similar to their own trademarked Twilight style.

The lawsuit is seeking an injunction against the Topics documentary as well as damages, according to TMZ.com.