The history of Skims: Kim Kardashian's wildly popular $4 billion shapewear line

• Skims, the shapewear brand that Kim Kardashian owns, is worth $4 billion.
• The brand sells undergarments and apparel in sizes from XXS to 5XL.
• The company became popular through influencer marketing and Kardashian's social-media expertise.

Kim Kardashian is worth an estimated $1 billion, thanks in part to her thriving business empire.