INTERIOR TRIM PART

An interior trim part () for cladding an inner side of a motor vehicle body has a cladding panel () forming an inner surface () and delimiting a passenger compartment. A flexible insulation layer () is fastened to a rear surface () of the cladding panel () that points away from the inner surface (). The cladding panel () has a protruding fastening element () projecting through an opening () of the insulation layer (). The fastening element () has a lateral receiving opening () and the insulation layer () has a retaining strip () unconnected to the rear surface (). The retaining strip () is inserted into the receiving opening (). A situation in which the fastening element () is covered by the extended insulation layer () is avoided by the retaining strip () inserted in the lateral receiving opening ().