Abstract: A trim panel assembly for attachment to a body panel of a motor vehicle includes a main body portion and a mounting arrangement. The mounting arrangement includes a first mounting member. The first mounting member has a generally L-shaped configuration with a first leg and a second leg. The first leg extends generally perpendicular to the main body portion. The second leg extends generally parallel to the main body portion. Preferably, the mounting arrangement further includes a second mounting member for resiliently biasing the main body portion downward. In one particular application, the trim panel assembly is a B-pillar trim panel assembly. In this particular application, the first mounting member extends through an aperture in the B-pillar and the second mounting member resiliently engages a housing of an airbag assembly.