ColourPop Babykins is a warm plum with a metallic finish that is limited edition and retails for $6.00. In comparison, Natasha Denona Swing (402M) is a warm plum with a pearl finish that is permanent in palette and retails for $29.00.
Natasha Denona Swing (402M) is 85% similar — it is less shimmery, more muted, cooler.
