Hailey Bieber — Rhode Skin ($400M Valuation)

Hailey Baldwin married Justin Bieber in 2018 and immediately became one of the most-followed women on Instagram (52 million followers). But her real move was Rhode Skin, launched in 2022 — a minimalist skincare brand that hit an estimated $400 million valuation within two years. The Rhode Lip Treatment went viral on TikTok (4 billion+ views on the hashtag) and is now sold in every Sephora worldwide. She's no longer "Justin Bieber's wife" in the beauty industry — she's the founder of the fastest-growing skincare brand of the 2020s. The WAG became the CEO.