Magic Vestment

(Player's Handbook v.3.5, p. 251)

Level: Cleric 3, Knight of the Chalice 3, Savant 3 (Divine), Strength 3, War 3, Celestia 3, Halfling 3, Nobility 3,
Components: V, S, DF,
Casting Time: 1 standard action
Range: Touch
Target: Armor or shield touched
Duration: 1 hour/level
Saving Throw: Will negates (harmless, object)
Spell Resistance: Yes (harmless, object)

You imbue a suit of armor or a shield with an enhancement bonus of +1 per four caster levels (maximum +5 at 20th level).

An outfit of regular clothing counts as armor that grants no AC bonus for the purpose of this spell.