The product is called the Ultimate Butt Enhancing line that includes padded shorts, leggings and bodysuits for a 'bigger, rounder, perkier' derrière.
The 44-year-old garment mogul flashed her backside when in a new SKIMS outfit perfect for Valentine's Day.
The 27-year-old singer has fronted the brand's special Valentine's Day campaign - which shows her posing in pink underwear covered in red lips] Kim added: 'Every SKIMS campaign is designed to be iconic, and Rosé embodies that perfectly.
Kim Kardashian was showing off her greatest asset on Instagram on Thursday: her generous butt.
Kim was seen in a video shared to Instagram for the new SKIMS collection as she pretended to be the beautiful 'Fairy Butt Mother' while wearing a nude leotard, tights, high heels and fairy wings.