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The four sisters, Kim, Khloe, Kendall and Kylie are all set to launch personalised apps this week. The reality stars are giving paid subscribers the opportunity to have a deeper glimpse into their lives with access to behind-the-scenes videos, tutorials, diaries and tips. It will also enable users to follow their whereabouts, ask them questions and sign up for events and giveaways.

Kim's is to be packed full of beauty tips, and we can expect to see lots of workout related material from Khloe, who has recently focused almost all her attention on getting fit.

As for Kendall, who walked for the likes of Alexander Wang and Diane von Furstenberg during New York Fashion Week over the weekend, fans will notice a distinct difference.

"Kendall is a high-fashion model, so the look and feel of her app is very clean and crisp," Jen shared. "Nobody knows who the real Kendall Jenner is - they see her walking the catwalk. We don't know much about who she is and what she likes to do. Her video content is unique; she chose to shoot it herself, unlike the others."

In addition to the apps, the brand-new websites,, and will offer a mix of free and exclusive subscriber content. Kourtney Kardashian's app and website will be next to come.