The Duchess of Cambridge's mother is the only person who can soothe the royal baby.

Duchess Catherine broke royal tradition by moving back into her parents' home in Bucklebury, England's Home Counties, after the birth of Prince George Alexander Louis in July and could spend up to six months with her mother Carole and father, Michael, to help her look after the tot.

A source told Grazia magazine: ''Carole is really amazing. They are calling her the 'baby whisperer' as she is the only one who can get him to sleep. The Middletons' home is such an oasis of calm for Kate, she is keen to stay as long as she can there, even up to six months.''

Prince William and Duchess Catherine's living arrangements are believed to be ''up in the air'' while their apartment at Kensington Palace in London is renovated.

The source continued: ''Kate feels so safe and secure with her family, as does William, and they want George's first six months to be as stable as possible.''

Meanwhile, Prince William recently returned to work as a search and rescue pilot for the RAF in Anglesey, Wales, after two weeks paternity leave.

The Prince only has one month left to work in Wales is then able to relocate to be closer to his family.

There was speculation the couple could move to Anmer Summer Hall on the Queen's Sandringham Estate in Norfolk, although sources say this is likely to be further in the future.