Natasha Denona Sienna (50DC) is a warm brown with a sparkle finish that is permanent in palette and retails for $29.00. In comparison, MAC Sand Tropez (Faerie Fayre) is a warm brown with a metallic finish that is limited edition and retails for $20.00.
MAC Sand Tropez (Faerie Fayre) is 85% similar — it is lighter, warmer.