Marc Jacobs Beauty Hips Don't Lilac (574) is a warm lavender with a sparkle finish that is limited edition and retails for $29.00. In comparison, Too Faced Unicorn Tears is a cool lavender with a sparkle finish that is limited edition and retails for $22.00.
Too Faced Unicorn Tears is 90% similar — it is more shimmery, lighter, cooler.
