Cloth Transmog: Cowl of Tirisfal (Horde Mage)

Cloth Transmog - Cowl of Tirisfal - Female Blood ElfHead: Burning Crusade Raid Drop - Boss Loot or Raid Trash Drop Cowl of Tirisfal (Mage Only)
Shoulders: Vendor - Justice Points Pauldrons of Catastrophic Emanation (Horde Only)
Back: Vendor - Gold Cape of the Black Baron
Chest: Crafted ItemAuction House - Click Here For Undermine Journal Robes of Creation
Hands: Vendor - Justice Points Emperor’s Riding Gloves
Waist:  Wrath of the Lich King Raid Drop - Boss Loot or Raid Trash Drop Furious Gladiator’s Cord of Dominance
Legs: N/A
Feet: World Drop - Includes Zone-Specific Drops Auction House - Click Here For Undermine Journal Sorcerer Slippers 

Main-Hand: Wrath of the Lich King Raid Drop - Boss Loot or Raid Trash Drop The Soulblade
Off-Hand: Vendor - Gold Eerie Stable Lantern

Here’s the full set on Wowhead.

There’s just something romantic about hoods. This set actually began as part of an aborted attempt to create something beautiful for draenei mages, but those shoulders, man. Don’t blame me. Blame Blizzard. And write to your congressman — it won’t help, but at least you can impress your friends while mingling over cocktails later with the fact you’re “active in local politics.”

Or, uh, something.

Plate Transmog: Warbringer’s Chestguard

Plate Transmog - Warbringer's Chestguard - Male Worgen

Okay, so when I look at that sword, I see watermelon. Is it just me?

Head: N/A
Shoulders: Mists of Pandaria Raid Drop - Boss Loot or Raid Trash Drop Pauldrons of the Broken Blade
Back: N/A
Chest: World Drop - Includes Zone-Specific Drops Auction House - Click Here For Undermine Journal Warbringer’s Chestguard
Hands:  World Drop - Includes Zone-Specific Drops Auction House - Click Here For Undermine Journal Warbringer’s Gauntlets
Waist: Dungeon Drop - Boss Loot or Dungeon Trash Drop  Quivering Heart Girdle 
Legs: Quest Reward Leggings of the Ursa
Feet: Mists of Pandaria Raid Drop - Boss Loot or Raid Trash Drop Jasper Clawfeet

Main-Hand: Mists of Pandaria Raid Drop - Boss Loot or Raid Trash Drop Starshatter
Off-Hand: N/A

Here’s the full set on Wowhead

Normally I make a joke here or go into what I was thinking when I was making the set, but, well…

It’s red…?

I’m going to go with red.

Plate Transmog: Red Face

Plate Transmog: Red Face (Orc)

Female toons, you’re going to want to preview this breastplate before committing to it. Your tolerance for eye-breasts will probably vary.

Head: N/A
Shoulders: Mists of Pandaria Raid Drop - Boss Loot or Raid Trash Drop Shoulderguards of the Unflanked
Back: N/A
Chest: Burning Crusade Raid Drop - Boss Loot or Raid Trash Drop Glory of the Defender
Hands:  World Drop - Includes Zone-Specific Drops Auction House - Click Here For Undermine Journal Oath-Bound Gauntlets
Waist: Quest Reward Rockpool Belt
Legs: Wrath of the Lich King Raid Drop - Boss Loot or Raid Trash Drop Fused Alloy Legplate

Here’s the full set on Wowhead

This set was intended to have more of a Death Knight bent to it, as was probably evident from the blood-drenched skulls motif, but none of the pieces have class-based limitations.

That said, unfortunately, Raid Drop - Boss Loot or Raid Trash Drop Edge of Agony is a Horde-only weapon. Should you faction-change to Alliance, you’ll find yourself holding Raid Drop - Boss Loot or Raid Trash Drop Reckoning instead.