YSL Coral Plume (79) is a warm coral with a pearl finish that is permanent and retails for $38.00. In comparison, Marc Jacobs Beauty Understudy (114) is a warm coral with a luminous finish that is discontinued and retails for $30.00.
Marc Jacobs Beauty Understudy (114) is 85% similar — it is less shimmery, more pigmented, cooler.