Which celebrity's cosmetics brand reached a valuation of $1 billion in just 18 months after its launch in 2015, making her the youngest self-made billionaire at that time?

Many famous celebrities have launched their own product lines that have become iconic brands in their own right. Some have revolutionized entire industries, while others have created billion-dollar empires. This trivia tests your knowledge about which famous personalities are behind some of the world's most successful product ventures and brand collaborations.

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• Kylie Jenner with Kylie Cosmetics
• Rihanna with Fenty Beauty
• Lady Gaga with Haus Laboratories
• Jessica Alba with Honest Beauty

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