Which psychological principle did Kylie Jenner most effectively leverage to create artificial scarcity and drive demand for her initial Kylie Lip Kit launch in 2015?

The Kardashian-Jenner family has built one of the most successful celebrity business empires in history. Their mastery of consumer psychology has transformed their reality TV fame into billion-dollar brands spanning beauty, fashion, and more. This poll tests your knowledge about how they've leveraged psychological principles to build brand loyalty and influence purchasing decisions across their various product lines.

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The Bandwagon Effect - creating the perception that 'everyone' was trying to get the products
The Scarcity Principle - intentionally limiting supply to create urgency and FOMO (fear of missing out)
The Mere Exposure Effect - repeatedly showing the products on social media until consumers felt familiar with them
Social Proof - exclusively using celebrity endorsements from her famous family members