In the world of beauty products, Kylie Jenner's and Kim Kardashian's first collaboration might truly be considered iconic. You definitely remember what I'm talking about. In November of 2016, Kylie Cosmetics launched a collection of creamy liquid lipsticks in collaboration with big sister Kim Kardashian. The collection sold out almost instantaneously — even more important, it served as the soft launch for Kardashian's very own KKW Beauty brand, which has since been a consistent hit with fans.

Last November, the dynamic duo reunited to create another bestselling line of lipsticks and glosses inspired by their own respective personal brands. The collection of sultry mauves and bronzed toppers sold out just as quickly as the first, proving that this duo has some serious selling power in the beauty product department.

The pair appears to be coming back together for one more epic collaboration — and this time it has little to do with makeup. In footage obtained from a brand-spanking-new Keeping Up With The Kardashians trailer, Kardashian might've not-so-accidentally revealed the packaging for a new product she's making with the youngest (and richest) member of the Jenner family.

Take a peek at the new product below and get to speculating on when it'll come out!