Teaser trailer and teaser poster from Disney’s “ Mary Poppins Returns ,” an all new sequel with a fresh sensibility that celebrates the spirit of the original. In the film, which hits U.S. theaters this Christmas, Mary Poppins is back to help the next generation of the Banks family find the joy and wonder missing in their lives. “Mary Poppins Returns” stars: Emily Blunt as the practically-perfect nanny with unique magical skills who can turn any task into an unforgettable, fantastic adventure; Lin-Manuel Miranda as her friend Jack, an optimistic street lamplighter who helps bring light—and life—to the streets of London; Ben Whishaw as Michael Banks; Emily Mortimer as Jane Banks; and Julie Walters as the Banks’ housekeeper Ellen; with Colin Firth as Fidelity Fiduciary Bank’s William Weatherall Wilkins; and Meryl Streep as Mary’s eccentric cousin, Topsy. The film also introduces three new Banks’ children played by Pixie Davies, Nathanael Saleh and newcomer Joel Dawson . Ange