Kardashian Sisters in a Gym, See their Tummies!

Kardashian sisters are pleasing our eyes with their tummies.

36-year-old Kourtney and 31-year-old Khloe put on almost matching clothes (black crop tops and leggings) and made a picture in a gym. They posted sassy mirror selfies on Instagram this Saturday.

Khloe captioned “gym selfie with the MILF”. Meanwhile Kourtney wrote “double gym selfie”. The mother of three (1-year-old Reign Disick, 3-year-old Penelope Disick and 6-year-old Mason Disick) is showing her tongue in the photo.

Khloe started her work outs nearly a year ago with a personal trainer. She has lost almost 40 pounds, according to People. Speaking with E! News in November the star stated that she was not fat, she was unhealthy.

As to Kourtney, she sticks to a fitness regimen and diet in order to get rid of the baby weight after giving birth to Reign.