Kirsten Dunst has signed a deal to reprise her role as Mary Jane Watson in the back to back filming projects Spider-Man 4 and Spider-Man 5, joining director Sam Raimi and Tobey Maguire who, as we reported, are already attached to the projects.

Dunst told MTV:

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“I’m in,” said the actress matter of factly. However, when pressed to make the announcement official, Dunst quickly changed her tone, and rather cryptically added, “I’m not saying anything, I know there’s rumors…”

Spider-Man 4 is scheduled for an April 30, 2011 release.