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Try a No-Fail Pillow Combination
All too often, we fall victim to the adorable throw pillow trap and buy a bunch in the same size. That's why the sofa looks overwhelmed with cushions, instead of styled. Really, you only need three: one 20-inch by 20-inch, one 16-inch by 16-inch, and one 12-inch by 16-inch. "Those three sizes look good together no matter how you arrange them," Henderson explains.