Quote -  So a Jedi robe shouldn't be closed at the front? (sorry.. I've seen Star Wars..  years ago.. so I dont remember the details)

Hm. Back to the drawing board then I guess. I am almost done with a dynamic hooded robe for M4. But that, too, is closed at the front :(

What you remember is possible Obi Wan in Star Wars EP IV (A new Hope) when he is first seen scaring away the Tuskin Raiders (AKA Sand People) from Luke. Normally the Robes are opened for easy access to the weapon of choice. The other reason why opened is for easy discarding if have to battle using the light saber. Not all Jedi wear the robes some find them restricting due to species.  A good reference can be found here

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