Kylie Jenner is collaborating with sister Kim Kardashian on her namesake cosmetics line, and the duo just teased the upcoming project on Instagram with a behind-the-scenes video that might leave some thinking they’re seeing double. Even though all of the various sisters bear a striking resemblance to one another, Kylie and Kim play their particular resemblance up in the short clip. Both appear nearly nude, with middle-parted, long, silky black locks, side-by-side to promote their latest venture.

In the video, you can see Kylie and Kim being touched up by a hair-and-makeup team on set for their collaboration. The post is captioned “COMING SOON @kyliecosmetics #KKW.” With little more information to speak of (as the Kardashian-Jenners do top-secret reveals like none other), it can be assumed only that this upcoming collection is going to sell out in record time. That said, will it be eye shadows? Lip kits? Something totally new for Kylie’s ever-expanding beauty brand? Only time will tell.

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As viewers of Keeping Up With the Kardashians know, the Kardashian-Jenner sisters often draw inspiration from one another and partner on everything from full product lines to special editions. Kylie and Kendall design a namesake fashion label together (Kendall + Kylie), and Kylie also recently released a capsule collection of her lip products under the name Koko Kollection with older sister Khloe, so it's only logical Kim joined the bandwagon and collaborated with her youngest beauty maven sister.

Although Kim has yet to delve into beauty under her own label, she is legendary makeup artist Pat McGrath’s latest muse. McGrath teased on Instagram a video of Kardashian debuting her Dark Star 006 eye kit.

In short, so much for that supposed sisterly jealousy.

Related: Kylie Jenner, Non-Professional Athlete, Dared to Be Photographed in Fitness Attire

Watch Kim Kardashian Take W's Screen Test: