Pat McGrath Duchess Divinity is a warm plum with a metallic finish that is limited edition and retails for $25.00. In comparison, Chanel Lame Pourpre (35) is a warm copper with a metallic finish that is limited edition and retails for $36.00.
Chanel Lame Pourpre (35) is 80% similar — it is less shimmery, darker, warmer.