MAC Sunphoria (Feminine Wiles) is a warm lavender with a metallic finish that is limited edition and retails for $20.00. In comparison, ColourPop Very Merry Unbirthday is a warm pink with a pearl finish that is limited edition and retails for $4.50.
ColourPop Very Merry Unbirthday is 90% similar — it is less shimmery, lighter, cooler.