That lady's costume sounds somewhat shaggy (7)
I believe the answer is:
hirsute
'shaggy' is the definition.
(I've seen this in another clue)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for hirsute that I've seen before include "Furry" , "Unshaven" , "Covered with hair" , "Hairy and shaggy" , "covered in hairs" .)