Would Julie Andrews approve? Would audiences? Emily Blunt is rumoured to play Mary Poppins, in a spin-off that would continue tale of the enchanted nanny and the Banks family.

Blunt is said to be in talks with Disney to star in a "Mary Poppins" sequel set in Depression-era London, 20 years after the first film, reports Variety.

Rob Marshall is attached to direct, with story lines taken from author P.L. Travers' "Mary Poppins" children's books.

The casting could become complicated, however, given that Blunt is expecting her second child, Variety notes.

Blunt has already proved her vocal chops in the 2014 film "Into the Woods" where she played the childless baker's wife.