The Kardashian-Jenner clan’s fitness queen is launching a line of activewear for her cult brand Good American. Khoe Kardashian’s popular brand is known for their size-inclusive jeans, but she is now stepping into the athleisure business.

Khloe took to social media to announce her new performance-wear line that is set to cater to sizes from XS to 4X. Check out the "Revenge Body" star showing off her size 4 post-baby body in Good American’s new activewear:

Khloe, who struggled with both her weight and confidence over the years, has been all about the body positivity lately. She recently revealed that she was surprised that more brands in the United States didn’t offer a wide array of sizes.

“It blows my mind to think that the average woman in America is a size 16 and that no one is catering to her.”

She also pointed out how important it was for brands to offer sizes for different body types since her body was always compared to her sisters’.

“I’ve always been compared to my sisters, who I will never look like, so it was really personal to me to create a clothes range that caters to all sizes.”

The news of her launching her inclusive performance wear comes after all the criticism she and Kendall Jenner received for glorifying their sister Kim Kardashian-West for looking anorexic.

The new line will be available at the Good American website, Nordstrom, SIX:02, and Selfridges. Do you think KoKo's new line will make urge other U.S. retailers be size inclusive?