Costumes

Folk Dancing in the Netherlands :

[ Kids/Teens/Mature Teens ] - Features photographs and descriptions of traditional costumes.
From Russia with Love :

[ Kids/Teens/Mature Teens ] - This exhibition, at the National Gallery of Australia, displays the elaborate designs made for the Russian Ballet between 1909 and 1933. Includes costumes, drawings, photographs and theatre programs.
The Mariinsky Theatre's Costume Departments for the Kirov Opera and Ballet :

[ Kids/Teens/Mature Teens ] - Detailed descriptions of their process for making ballet costumes and all the accessories for the dancers. Many photos.