From A Wiki of Ice and Fire
The White Graces are made up of young girls of noble birth too young for the pleasure palaces.
A Dance with Dragons
The Green Grace Galazza Galare arrives at the Great Pyramid attended by a dozen White Graces. They make for a pretty portrait, the proud old woman all in green surrounded by the little girls robed and veiled in white, armoured in their innocence. Missandei sees that they are fed and entertained, whilst Daenerys Targaryen and Galazza Galare share a private supper.
- ↑ 1.0 1.1 A Dance with Dragons, Chapter 23, Daenerys IV.