This The Sound of musique photo contains
manteau, capote, and manteau à capuchon.
There might also be
opéra manteau, opéra hotte, manteau d'opéra, opéra, manteau d’opéra, and hotte opéra.
Here's a video comparing Maria's blue chiffon dress with the Edelweiss Patterns version of "Maria's Gazebo Dress".(The reproduction dress is available at link