Romantic comedy star Sandra Bullock walked the red carpet in Munich for the German premiere of her latest film The Proposal. Bullock, whose mother is German, said that she is interested in becoming German too. She said: "We are hoping that we can get dual citizenship, that we can get two passports because we heard that the sons of German mothers can get them but not daughters. Why, I don't know." "We are hoping that the girls can have them too and if they can, my sister and I are going to do it too." Co-star Ryan Reynolds, who recently married actress Scarlett Johansson, said the chance to work with long-time friend Bullock was a great opportunity. He admitted he was initially slightly concerned about their on-screen chemistry. But after the first days of rehearsals, all worries flew out the window. "Friendship on a set can also help for trust. When you really trust your co-star it makes difficult moments incredibly easy," he said.