doubleofive said:

I still can't get over the fact that the Jedi uniforms in the prequels are what Obi-wan wears in A New Hope because its what Obi-wan wears, but no one noticed that everyone on Tattooine wears the same clothes and it wouldn't make sense for a Jedi in hiding to dress like a Jedi.

I don't know but seeing as though he was in hiding, I don't think mingling with the locals was on his agenda. Maybe when he ventured into Mos Eisley to get supplies he didnt wear his robe. Shrug.