It could also be because Kendall was busy with her own commitments in the makeup world. Kendall was previously in a contract with Estée Lauder, as one of the younger faces of the classic brand, and may not have been allowed to collab with other cosmetics brands.
On Thursday night, the makeup mogul shared the first look at Kendall Jenner's collection and while it was brief, it looks pretty slick.
The packaging for the 'Kendall by Kylie Cosmetics' collab features a closeup image of Kylie and Kendall's face. They're wearing a classic Kardashian glam look. Think soft, matte brown smokey eyes with a subtle liner and brown-toned lipsticks.
Previous sneak peeks have teased lipsticks, compacts and baby pink, orange and gold packaging. Both Kylie and Kendall are wearing the collection in the video they shared, so you can expect orange, yellow and neutral colours.
While we're waiting in anticipation for a more revealing look at these nudes (lipsticks, we mean) check out some of our favourite beauty Instagrammers for some fresh makeup inspiration.
No word yet on a Rob Kardashian x Kylie Cosmetics collab, but we'll keep you posted.