Here it is, straight from the horse's (Meldrum...not WIKI) mouth:

7. Hats
My original was a "Billy the Kid" Stetson which Lindsay Fox brought back for me from Texas. Now there's a place in Brisbane that makes them for me. I probably go through about 20 a year.

http://www.onlymelbourne.com.au/ian-molly-meldrum#.VCj7-Oe6DRY