Small addendum to the poncho idea noted above: in AOTC, when Anakin wears a commoner's disguise while escorting Padme home to Naboo incognito, said disguise consists largely of a poncho.
Only here, since Anakin's underlying outfit is brown, it's the poncho itself that is white (instead of the poncho being brown and the outfit beneath white, as in the original concept from the 1970s).
This whole subplot with Padme fleeing Coruscant undercover seems borrowed from the 1974 rough draft. Which is odd, because Lucas had just used that exact plot in TPM.