Kylie and Kendall Jenner are to get their own TV show.

The teenage sisters - who are aged 14 and 16 respectively - will feature in three spin-off programmes on the E! Network, which also airs the shows of their half-sisters Kim, Kourtney and Khloe; including 'Khloe and Kim Take New York'.

two, three, even four new Kardashian spin-offs

Kylie and Kendall have previously made brief appearances in family reality show 'Keeping Up With the Kardashians' but have not taken centre stage in their own programme before.

Bonnie Hammer, Chairman of NBCU Cable Entertainment and Cable Studios, said she was hoping for "two, three, even four new Kardashian spin-offs", with 'Dancing with the Stars' runner-up Rob Kardashian also being rumoured to be the focus of a new show.

Discussing the future of the Kardashian franchise, she added it would continue as long as it was relevant.

She added: "I think it will have its own life expectancy and we'll just go along with it and help hone what's right for E! and what's not right for E! as we develop a whole other world."

Bonnie also refuted claims the 72-day marriage between Kim Kardashian and Kris Humphries was fake and set up for the programme.

She added to the Hollywood Reporter: "This was not a stunt. In no way did people believe that this was going to happen.

"I think true Kardashian fans know that a bigger than life mistake can be made easily in their world. Everything they do is bigger in life, it's just part of their DNA."

Kendall recently launched a modelling career while Kylie is dating Australian pop star Cody Simpson.