I realise that I haven’t done any particularly burglarish in terms of outfits, mostly because my burg is on another server without the wardrobe full of fancy clothes. So here is a reasonable facsimile – the poor hobbit featured is really a guardian pretending to be a burglar, standing in brightly-illuminated spots being all kinds of visible, and not really pilfering anything.
Head: Mathom-hunter’s Hat, default (Hobbit presents. If the RNG hates you, the Traveller’s Hood dyed steel blue will also do)
Shoulders: Recruit’s Heavy Shoulders of Adlan, black (Skirmish camp heavy armour vendor)
Back: Cloak of the Raven, steel blue (Harvest Festival item)
Chest: Ceremonial Jacket of the Silent Knife, grey (Lalia’s Market)
Hands: Light Nadhin Gauntlets, black (Somewhere in Gondor. May be found on the auction house)
Legs: Leggings of the Wall-warden, black (level 65 Barad Guldur warden set, available from the skirmish camp Classic vendor)
Feet: Rugged Work Boots, black (Beorning starter gear)