Possible Clues:

• Costumes in some Degas paintings
• Expressions of disapproval surrounding socially acceptable skirts
• Dancer dresses first in training uniform then ugly suit
• Hippos' garb in "Fantasia"
• Hippos' garb in 'Fantasia'
• Ballet accessories
• Dancer dresses an Egyptian king in front of you, and me
• Ballet pieces
• Costumes for the hippos in 'Fantasia'
• Ballerinas' garb