Here's some examples of robes that look like bathrobes on male elves. You were in gravest peril while you wore the Ring, for then you were half in the wraith-world yourself, and they might have seized you.You could see them, and they could see you. If it's not possible, maybe re-use some of the patterns from bathrobe-shaped robes and put them on one of the better robe shapes? But best would be to tweak the one that looks like a bathrobe =) The Fellowship of the Ring Quotes from Tolkiens Novel : Rivendell: Many Meetings. Sadly one of my favourites would be Robe of Viisaus, but it doesn't fit my male elves at all.
The other races and genders look better in those robes than male elves do. Shown above right is the United Cutlery Sword of the RingWraith that we weathered to look more like the dirtier wraith's weapon. The leather is dyed and finished with carvings of Noldor font scripture and symbolism, every one unique.
I don't know if this is possible but please tweak the shape a bit to make them look more elegant and less bathrobe-ish on male elves =) Maybe reshape the waist and sleeves a bit or something? =) The Kropserkel scabbard/harness features forged iron rings for tying off the belts and forged metal chapes (tips).
One of the robe shapes look like a bathrobe on male elves so it's not very flattering, but all the patterns are really nice so it's sad to not be able to use them.