The term 'One of the Kardashians' refers to three members of the famous Kardashian family: Kim, Khloe, and Kourtney. Kim is the eldest of the three siblings and is a media personality, businesswoman, socialite, model, and actress. Khloe is the second oldest and is also a media personality, businesswoman, and socialite. Kourtney is the youngest of the three and is a media personality, businesswoman, and lifestyle blogger.