In The Big Lebowski, Donny is always shown wearing a bowling shirt bearing different names (which are never his own name):
When The Dude and Walter are at the funeral home making the necessary arrangements for Donny's funeral, The Dude is shown wearing a bowling shirt bearing the name "Art" on it (which is obviously not his name):
Is there any evidence from filmmakers that The Dude is wearing one of Donny's bowling shirts? Was this some kind of memorial to Donny?