Some answers in Boba Fett history:
"7. Wookiee Scalps" -- Description of Boba Fett's costume in Bantha Tracks #5 (1979)
"I got into the costume and I put the helmet on. There were lots of little gadgets and knee pads and the boots had two little jets on the toes. I thought, 'This looks rather good!' There was a jet pack, too. I found what I thought was my hair so I put it on underneath the helmet, hanging down. When I came out to show George Lucas, he said, 'What's that funny thing sticking out of your helmet?' I said, 'Isn't it the character's hair?' 'No,' said George, 'it's a Wookiee scalp -- it's supposed to be tied to your belt!'" -- Jeremy Bulloch, as quoted in Lucasfilm Fan Club Magazine #21 (Winter 1994)
"Braided Wookiee scalps hang over his right shoulder." -- Kenner POTF2 Boba Fett figure cardback (1995)
"Braided wookiee pelt trophies." -- Sideshow Premium Boba Fett figure (2007) and Sideshow Bronze Boba Fett statue (2010)
Founder/Editor, BFFC
aaron@bobafettfanclub.com