the ceremonial act of clothing someone in the insignia of an office; the formal promotion of a person to an office or rank
ceremony in which the Governor-General presents Australian Honours and Awards System awards
Ceremony in which girl forgets her promise after practicing it at least 25 times that afternoon.
A special ceremony in which a new member makes her Girl Scout Promise and receives her membership pin.
Investiture, from the Latin (preposition in and verb vestire, 'dress' from vestis 'robe') is a rather general term for the formal installation of an incumbent (heir, elect of nominee) in public office, especially by taking possession of its insignia. The term is normally reserved for formal offices of state, aristocracy and church.