Earth, Rhaandaran, Axanar
The fashion of Earh seems to be generally bland jumpsuits for men. It's possible that the lack of human suffering has dramatically decreased fashion desire on Earth. Women on the other hand have a growing use of revealing outfits, such as mini-skirts, likely influenced by other civilizations.
The Rhaandarite fashion includes brightly colored hooded robes, usually for dignitaries. This will be shown on visits to Rhaandaran and perhaps on special occassions in which Skurpaj honors his heritage.
The Axanar wear utilitarian gray outfits underneath a "bulletproof/kevlar" appearing black vest. All Axanar will appear to wear the same outfit, albeit with markings that indicate rank or status.