ColourPop IRL is a warm duochrome with a sparkle finish that is limited edition and retails for $6.00. In comparison, Natasha Denona Yama (387DC) is a warm duochrome with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Yama (387DC) is 95% similar — it is more shimmery, cooler.