NARS I'm So Excited is a warm copper with a pearl finish that is limited edition and retails for $19.00. In comparison, NARS L'Amour, Toujours L'Amour #6 is a warm copper with a frost finish that is discontinued and retails for $25.00.
NARS L'Amour, Toujours L'Amour #6 is 90% similar — it is more shimmery, lighter, warmer.