The actor, who recently wrapped up the shoot of his film "A Good Day to Die Hard" and "Red 2", has already started preparing for the sequel.
Willis' return to the "Sin City" sequel is confirmed by director Robert Rodriguez himself when attending the 2013 Sundance Film Festival in Utah, reported Aceshowbiz.
"Juno Temple just shot, she was fantastic. Her and Ray Liotta played together, they were amazing. Jeremy Piven shot just last night we were shooting last night, all night. There are some characters from the book. It might surprise people who they play and the turns that they do. Bruce Willis is back, so you'll be seeing him," Rodriguez said.
After announcing Willis' comeback to the franchise, Rodriguez dishes on the 3D shot of the sequel.
"We shot this in 3D. We didn't shoot 'Sin City' in 3D. I wouldn't want to convert that one probably. The difference in shooting it is just... You can't even compare. Because this is a very two dimensional world it's very stylized. To see that kind of stylization in 3D will blow people's mind."
