It looks like Catherine Duchess of Cambridge and Prince William are in the market for a new nanny for royal baby Prince George as the brood is set to head to New Zealand and Australia in April.

According to E! News, George's current nanny, Jessie Webb, has reached the end of her contract with the royal family.

The 71-year-old who was chosen by Princess Diana as the caretaker of both Prince William and Prince Harry when they were boys came out of retirement to help the new parents with their infant, seven weeks after he was born.

However, the agreement was that Webb would only work for about three months and it looks like time is up.

But it has been reported that Kate Middleton and the Duke of Cambridge are interested in retaining Webb's services past her contract and are looking for some extra help for the four-week tour.

A source told the Daily Mail, "I can't imagine that she will want to be traveling around the world at her age."

Back in December the royal family was invited for a visit by both the New Zealand and Australian governments.

Prince William and Kate Middleton are scheduled to head to New Zealand with Prince George first before making their trip to Australia.

By the time the family of three embarks on their journey George will be about nine months old.

Prince William last visited New Zealand in March 2011 following the earthquake. During the same trip he visited Australia, which suffered flood-damaged to the Queensland and Victoria areas.

Coincidentally Prince William visited the countries with his parents Princess Diana and Prince Charles back in 1983 when he was nine months old.

The April visit will be both Catherine, Duchess of Cambridge and baby Prince George's first trip to New Zealand and Australia.