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 celebrities have leveraged their fame to launch successful product lines and retail businesses. Some have created billion-dollar empires, while others have established niche brands that align with their public personas. This trivia tests your knowledge about famous people who've made significant impacts in the retail and product development space beyond their primary careers.

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• Kylie Jenner (Kylie Cosmetics)
• Rihanna (Fenty Beauty)
• Lady Gaga (Haus Laboratories)
• Jessica Alba (The Honest Company)

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