In 2016, Khloé Kardashian told Elle that her sister Kim "does not drink alcohol whatsoever [...] she's just never been into it." Two years later, an anonymous source told People that "[Kim] definitely does not do drugs and hasn't for years — and even then she barely dabbled." So why does Kim K stay fairly straight-edge?

In August of 2021, Kim posted an old picture of herself and Kourtney and wrote about visiting her sister in college: "University of Arizona single handedly stopped me from turning into a wild party girl. I remember visiting Kourt on campus and being her designated driver, I hated all of the wild parties so much that I [...] never wanted to drink or party EVER”.

However, Kim isn't completely stone-sober. On an episode of “KUTWK”, Kourtney dragged Kim out for a girls' night, and Kim chugged champagne directly from the bottle, which sent fans of the show into a real frenzy. "I love seeing Kim drink because she never drinks," one fan tweeted. "she be so lit."

Kim has also been forthcoming about a "wild phase" she went through, during which she dabbled in party drugs. "I got married on ecstasy. The first time," Kim admitted in 2018. "I did it again, I made a sex tape [...] I'm not like that anymore. But I still have fun — don't get it twisted, I'm always the life of the party."