The cloak is easy, it is the cosmetic Raven cloak from the fall festival.
The boots look very generic, I guess you can even find them at the armorer shop in Bree or Thorins Hall.
I have seen the shoulders in Lalias Market, as Ceremonial Shoulders of the Lady's Secrecy. The real armor piece belongs to a very specific Lothlorien related set, where you have to bring trophies from Dar Narbugud and barter them for the armor. The head piece belongs to the same set, or is available at Lalia's as the Ceremonial Helm of the Lady's Secrecy.
I cannot say for sure if the chest piece also belongs to this set, as there is no 'Ceremonial' version available at the Market, and I cannot talk to the Burglar trainer on the Telain Galadhrim, as I don't have a class of this level.
Greetings, Polymachos
Räuberhöhle auf Belegaer, Breelandsiedlung, Ochsbott, Lange Straße 5. Vorsicht, Fallen!
Awkward Anomalities Arena in Breeland Homesteads, 6 Long Street, Ersward (Landroval) - Elderslade under attack!
Scared people tend to follow the flock, no matter which shepherd it has