If those were real feathers they would not reflect the excellence of Yves St. Laurent. Indeed they are very thin strips of leather with skillfully cut fur that are arranged to match the natural fall of the hair and
they are just a breath lighter than the hair color.
To create a contrast in texture the long hair itself was styled very smooth and straight, most likely with the aid of a smoothing serum to avoid fly-aways or frizz. All
is combed close to the head and around it to cascade over one shoulder on the side.