Kim Kardashian and Kanye West are adding a ''nanny wing'' complete with spa onto their new home.

The couple are currently expecting their first child and want to employ three members of staff to assist with the new arrival, and are willing to spare no expense when it comes to treating the employees well.

A source said: ''As with everything Kim and Kanye related, they're not holding back.

''Each of the nannies will receive a salary of around £130,000 per annum. They will be given a car each and new phones so that they can stay in contact with Kim and Kanye around the clock.

''They want to build a wing on their mansion with three bedrooms, three bathrooms, a second nursery, a kitchen and a spa area for their new employees.

''Kim and Kanye feel it's important to have a separate area marked off so that they can still spend time alone as a family.''

Those interested in working for Kim and Kanye will have to go through a tough interview process.

The source explained to Grazia magazine: ''All of the candidates will have to go through a thorough interview process and the contracts will be absolutely watertight.

''They're really keen to make sure anyone they employ isn't fazed by their celebrity so they're looking for people who have previous experience working with high-profile clients.''