Cleopatra was girly in the extreme in brief fancy panties (8)
I believe the answer is:
egyptian
'cleopatra was' is the definition.
(Cleopatra was Egyptian)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for egyptian that I've seen before include "Cleopatra or Tutankhamun, say" , "Nationality of citizen of Cairo" , "From North African country" , "NE African" , "Pharaoh's nationality?" .)