Kendall and Kylie Jenner continue to push forward with their fashion empire, creating an exclusive nine-piece capsule collection for Neiman Marcus.

The sisters have come up with the vintage-inspired line for the upmarket US retailer's #OnlyatNM program.

The pieces emulate the duo's heavily-documented personal styles, and include bold sartorial choices that remain within the realm of the classic, such as a sleeveless pleated-bodice dress crafted from poppy red silk.

There is also a cream belted leather moto jacket that emanates off-duty model style, a mid-rise leather short and a very on-trend wide leg culotte jumpsuit. Additional separates include a very Kylie-esque waist tie silk midi skirt in a wrap style and a V-neck dress with a split asymmetrical hem.

"The collection is sophisticated, clean and beautifully tailored," said Kendall. "We wanted to widen our range of customers by introducing a more premium clothing line. We incorporated a lot of sophisticated and versatile pieces that were simple yet chic."

The fashionable duo have been steadily growing their style brand over the past few years, often dipping into their own extensive wardrobes for inspiration. Following early capsule collections with PacSun and Topshop, the sisters finally branched out on their own this year with the launch of the first official "Kendall + Kylie" collection for Spring 2016.

Focused on sharp separates and killer heels, the line's high profile New York Fashion Week debut gave an indication of the sisters' upmarket expectations -- an ambition only confirmed by the latest partnership with luxury department store Neiman Marcus. With a rumoured eyewear collection in the pipeline, one thing's for sure -- the pair's influence on the fashion industry seems set to increase.

The capsule #OnlyatNM collection will launch in stores an online at neimanmarcus.com on April 7.

Match your lips with the new collection with a lipstick shade also single-handedly crafted by Kendall.