An exterior component for a vehicle includes a first member having a decorative surface provided at an external portion thereof for transmitting light, the first member further including a first engaging portion, a second member having a second engaging portion engaging with the first engaging portion of the first member, the second member attached to the vehicle, the first member and the second member forming a double layered structure under the first engaging portion of the first member engaging with the second engaging portion of the second member, and a light-emitting member provided in the double layered structure of the first member and the second member for lighting up and shutting off the light in response to a supply of electricity supplied from the vehicle.