By the way, I visited the Star Wars and the Power of Costume traveling exhibit a while back, and ran across this little gem.
[Image description: A photograph of a museum placard. It reads:
“OBI-WAN KENOBI Jedi Robes, 1999 Episode I: The Phantom Menace
Vintage wool from World War II era
Doused with water during filming, the vintage wool fabric of Obi-Wan’s cloak began to shrink—shortening to near knee length in minutes. This meant using—and ruining—a new cloak for every take.”]
Look, I’m not saying there’s a correlation between Ewan McGregor’s robe situation in TPM and Obi-Wan’s tendency to lose his robes later in the series, but I’m not saying there isn’t one either. ;-)