Adaptive, self-adjusting decorative trim assemblies are especially adapted for use in aircraft cabin interiors where the fuselage undergoes deformation and/or distortion due to pressurization during flight. The self-adjusting features of the decorative trim assemblies according to the embodiments described herein thus allow for relative movement between mutually intersecting interior cabin panels (12, 14) without jeopardizing the cabin interior aesthetics (e.g., since the relative positioning of the panels is not disrupted by virtue of such fuselage deformations).