Crossword Genius

Girl initially wearing messy anorak and old jumper (8)

Ross

I believe the answer is:

(Other definitions for kangaroo that I've seen before include "Leaping marsupial", "Illegal court of marsupial origin?", "Australian animal -- a no-go ark (anag)", "Pouched animal", "Large Australian mammel".)

I've seen this clue in The Telegraph.