Dior Ruby Essence (778) is a warm plum with a pearl finish that is limited edition and retails for $30.00. In comparison, Charlotte Tilbury Walk of No Shame is a warm plum with a sparkle finish that is limited edition and retails for $32.00.
Charlotte Tilbury Walk of No Shame is 80% similar — it is less shimmery, lighter, less pigmented, cooler.
