Khloé Kardashian — Good American

The "least famous" Kardashian sister built Good American — a size-inclusive denim brand that did $1 million in sales on its launch day in 2016 and has since expanded into a full fashion label doing over $200 million annually. Good American was the biggest denim launch in history. Khloé positioned the brand around body positivity and inclusive sizing (sizes 00-32), filling a gap that luxury denim had ignored for decades. She turned being the Kardashian the internet body-shamed into a brand identity worth hundreds of millions. That's revenge capitalism at its finest.