Kendall and Kylie Jenner are opening a pop-up shop.

Kendall and Kylie Jenner

Kendall and Kylie Jenner

The 'Keeping Up With the Kardashians' stars - who launched their first ready-to-wear line earlier this year after previously collaborating with brands including Topshop and PacSun - will open a store for their Kendall + Kylie collection on September 7 during New York Fashion Week.

The sisters will be greeting fans and shoppers at the Samsung 837 Washington Street space in the city's Meatpacking District, a spokesperson confirmed to WWD.

The news comes after Kylie announced she will be putting her Birthday Edition make-up collection on sale for "one final time" this Wednesday (31.08.16).

The 19-year-old businesswoman has decided to pull together the exclusive range, which she released for a week on the run up to her birthday on August 10, for one last time after she was bombarded with requests from disappointed fans.

Taking to her Snapchat account on Monday (29.08.16), she said: "So there's been a lot of request to have the Birthday collection come back so this Wednesday for the last and final time we're able to pull together the full Birthday bundle, the mini kit and the cream eye shadows in copper and rose gold. They will all be available this Wednesday. And also this Wednesday, Kyshadows are coming back...

"So if you get the Birthday bundle again... the bag's included and you get two cream shadows ... Leo exclusive lip kit, bronze Kyliner, exclusive birthday edition Poppin' gloss, Lorde metal lip stick and my favourite the mini mattes."

However, Kylie wants to make sure none of her fans miss out and has decided to sell the mini matte lip gloss kit and eye shadows separately.

She said: "If you don't want to buy the whole Birthday bundle, I'm gonna sell the mini mattes and the eye shadows separately."

Meanwhile, Kylie's exclusive birthday range seemed so popular with fans that it sold out in less than five minutes.