Abstract: A mounting and retaining clip for, inter alia, mounting decorative molding around the perimeter of an automobile wheel well opening. When in use said clip is only visible upon inspection from below or within the wheel well opening. The clip is comprised of a single piece of stamped sheet material (i.e.: stainless steel) bent into generally a curved C-shape, the curved portion comprising a central connecting web for first and second end portions. The center web section has a generally planar or slightly curved biasing prong connected thereto which acts as a retainer biasing means. The first end portion of the C-shape has a downwardly angled edge portion which acts as a projection receiving means adapted to firmly engage a corresponding projection disposed in the piece of trim or molding sought to be mounted. The biasing means acts to maintain said downwardly angled edge portion in firm engagement with said projections. The second end portion has at least one fender well lip engaging surface.