Kris Jenner is like a ''full-time nanny'' to North West.

The 'Keeping Up With The Kardashians' star is reportedly always called on to look after her daughter Kim Kardashian West's 23-month-old child.

A source said: ''She's turned into a full-time nanny for Kim and Kanye [West; Kim's husband] while they parade around the world.

''Since Kanye joined the family, she's turned into a total 'yes' person when it comes to Kim and Kanye.''

And the insider claims Kris' work will be affected when she has to look after Kim's two children come December, after the 34-year-old television personality recently revealed she was expecting a baby.

The source told US' OK! magazine: ''The problem is she's not got time for anything else now.''

In recent months, Kris looked after the little one whilst Kim visited the Middle East to launch her new perfume and in March this year, the 59-year-old star was also given the responsibility of bringing North to join her parents in France for Paris Fashion Week.

The prospect of more work as a nanny doesn't seem to bother Kris as she was the first of the family to take to social media to express her happiness about the new arrival.

Soon after the happy news was revealed, she tweeted: ''Congratulations!!!!!!!!!! Can't wait to meet your new little love bug!!!!! Sooooo happy for you guys!!!!!!!!!! #blessed #love #family#youaresobeautifulpregnant (sic).''