tsunokakushi
A headwear in traditional Japanese wedding ceremonies, consisting of a piece of cloth wrapped around the bride's hair. This generally allows the hair to peek through, and the look often includes other hair adornments. A clear example can be seen in post #3151251.
For the more hoodlike design, see wataboushi.
Compare in post #2159980 (here), on the left is a tsunokakushi, and on the right a wataboushi.