Watch out! Kendall and Kylie Jenner are now taking over the world of mobile apps! 

The 59-year old momager of Kendall and Kylie announced on Tuesday that her two youngest daughters are following in their famous sister Kim Kardashian's footsteps and are developing their own mobile game app.

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Blossoming supermodel Kendall took to Twitter to announce the exciting news. She posted a photo of her and sister Kylie's avatars and captioned it, "We couldn't wait to tell you any longer! Excited to announce that we are working on our own mobile game!" and included the hashtags #KendallKylieGame and #staytuned.

17-year old Kylie also announced the news to her almost 19 million followers by sharing the same photo. "Kendall and I are excited to announce that we are working on our own mobile game! #KendallKylieGame#staytuned."

Glu Mobile, the developer and publisher of the game, also released an official statement regarding the Jenner sisters' app.

CEO of Glu, Niccolo de Masi, revealed that they are tremendously pleased to partner with the sisters over a 5-year contract and said that they "bring a tremendous amount of brand power and social impact to an audience largely untapped by the gaming industry."

Niccolo continued and said that they expect that his company's expertise in "celebrity-based mobile gaming," as well as the sisters' creative input will yield a remarkable experience that will resonate with their millions of followers in social media.

The announcement said that the game will give players the chance to interact with Kendall and Kylie as mentors and friends, as they work to achieve their career and creative aspirations.

Glu was also the video game developer behind Kim's successful "Kim Kardashian: Hollywood" game.

As published by AdWeek, the game has garnered more than US$74 million in 2014.

TagsKendall Jenner, Kylie Jenner, Kendall Jenner Kylie Jenner Game