Kourtney Kardashian is an American media figure, businesswoman and advocate for clean living and wellness. Rising to notoriety through her role on the reality series Keeping Up with the Kardashians and later The Kardashians, she leveraged her platform into the lifestyle brand Poosh (launch 2019) and later the nutraceutical brand Lemme. Her public persona blends family, health, and lifestyle-commerce, showing how creator influence can extend into meaningful brand ecosystems.