Abstract: The present invention provides a process for joining adjacent panels of plural-layer upholstery, including the steps of positioning a first upholstery panel having offset backing and exterior layers adjacent a second upholstery panel having offset backing and exterior layers, and substantially aligning longitudinal peripheries of the first and second panels. The process further includes the steps of stitching the first and second upholstery panels together along a first stitching line positioned inboard of the longitudinal peripheries and substantially parallel thereto, and stitching portions of the first and second panels outboard of the first stitching line to an inboard portion of one or more of the panels along at least a second stitching line.