Helm: Sacred Crown Helm

Armour:  Ivory-Draped Tabard

Gauntlet: Foot Soldier Gauntlets

Leggings: Foot Soldier Greaves

Where To Find: 

(Click the link above to view the equipment and watch the getting video.)

The full set is dropped by Godrick Foot Soldiers scattered across most areas of Limgrave.

However, the gauntlets and leggings are exclusively dropped by these soldiers.