Julie Andrews is "100 per cent behind" 'Mary Poppins Returns' - but won't appear in it. The 81-year-old actress - who played the magical nanny in the 1964 musical fantasy film - is backing the forthcoming project and is pleased director Rob Marshall has chosen Emily Blunt to portray the leading role because she thinks she's "amazing." She said, "This is Emily's show, and I really want it to be Emily's show. I don't want it to be, Oh, here comes that Mary Poppins. I don't want that.