Well if you can elaborate on the term 'Sith robes' I might allow you to have them. During the time of hte new REpublic there was a Sith, which was composed of followers of Dark Lords, but they were not all necessarily Force wielders. If you are referring to a robe which was worn the Sith faction then I think it will be ok.
However if you are referring to a Sith Masters robe I cannot allow this. Anything related to the Force is restricted to the Dark Jedi order and given the time period there were not any known Sith running around, let alone a bunch of Force wielders.(DJO is different, they are secretive and unknown :-P)
The only way I will allow you to keep the Sith robes as your clothing is if you somehow elaborate within your bio that these are robes from the Sith faction, not a Force wielders robes. If you are unsure what I am referring to play Knights of the Old Republic. And I wouldn't wear a piece of clothing like that because it is more than 4000 years old, and would be extremely valuable.
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Vast Empire Naval Training Officer
Naval Academy
NTO/CPT sk8guy/Abrae/Vectra System - (=A=) (=SA=) (=MA=) (=FOCE=)[LSM][IC]
DJK sk8guy, retired hermit of the Dark Side
Ex Ambassador/Squadron Leader/Cult Leader/Lusthawk
WoW addict.