Kylie Jenner's "new favourite jeans" are from sister Khloé Kardashians Good American range.

Kylie Jenner

Kylie Jenner

The 19-year-old 'Keeping Up With the Kardashians' star - who is the youngest of the Kardashian/Jenner brood - has admitted her 32-year-old siblings new fashion range for the denim brand, which launched on Tuesday (18.10.16) has become her wardrobe staple.

The beauty mogul shared the news on her Instagram account alongside a picture of her in a light-wash, high rise and cropped pair of jeans, with a white jersey crop top and green bomber jacket.

She captioned the post: "@khloekardashian denim line available now @goodamerican My new favorite jeans #goodsquad (sic)."

And Khloé's older sister Kourtney, 37, has congratulated her sibling on her latest fashion venture.

Alongside a picture from the Good American campaign, she wrote: "So proud of my sister for creating this denim line for women of all sizes. Go to to get yours! (sic)."

Meanwhile the former 'Kocktails With Khloé' host has admitted she is "beyond overwhelmed" by the influx of "love and support" she has received since she unveiled her capsule, which was designed in sizes zero to 24.

Alongside a clip from the company's commercial, she wrote: "I'm so thankful and beyond overwhelmed by the love and support of tonight! This is just the beginning. God, thank you for my family and friends! Life is but a dream.

"Omg you guys thank you so much for all the support!!! I'm so excited you love the @goodamericanstyles!! Which is your fav?? (sic)."

And the television personality has revealed she was inspired to create the collection because she was "embarrassed" when she used to shop for a new wardrobe but the stores didn't have her size in stock.

Speaking previously, she explained: "When I used to shop for premium denim at high-end boutiques, they would go up to a size eight or ten. I was I'd say a size 12 at the time and I would get so embarrassed going with my sisters."