When I set about choosing Lady Sinaea's armor, all I knew is that I didn't want her to look like every other scantily-clad human female out there. I think this crazy mishmash of armor pieces somehow works, and I love it. :)
Head - Glacial Eye (starter)
Shoulders - Hidden
Torso - Enduring (karma, Fireheart Rise or Orr)
Hands - Crab Grabbin' (karma, Bloodtide Coast)
Legs - Aetherblade (gem store)
Feet - Everburning (karma, Fireheart Rise or Orr)