DESIGN PART INSTALLATION STRUCTURE FOR VEHICLE

A design part installation structure for a vehicle (V) includes: a lamp body (2) exposed on a design surface of the vehicle (V); an outer panel (1) having an installation section (12) for installing the lamp body (2) and defining the design surface; and a parting line (L) formed between the lamp body (2) and the outer panel (1). The parting line (L) includes a curved third parting line segment (L3). The outer panel (1) has: an orthogonal flange portion (13a) which is provided in a section corresponding to the third parting line segment (L3), extends from the installation section (12) toward vehicle inside, and is orthogonal to a main body (11); and an inclined flange portion (13b) which is provided in a section corresponding to the third parting line segment (L3), extends from an extending end of the orthogonal flange portion (13a) toward the vehicle cabin, and inclines toward the lamp body (2) as a position thereon shifts in the direction from vehicle outside to vehicle inside.