To say the world is waiting with bated breath to see how George and Amal Clooney’s lives will change when their twins arrive any day is something of an understatement. Picture: AP

Tanith Carey looks at how Britain’s most glamorous couple have been preparing for parenthood.

She's a high-powered human rights barrister who manages to look catwalk-ready wherever she is. He’s the debonair career bachelor who, until his 50s, said he had no interest in marriage, let alone children.

So to say the world is waiting with bated breath to see how George and Amal Clooney’s lives will change when their twins arrive any day is something of an understatement.

It's a boy, it's a girl!

The obsessively private pair have been secretive about their new arrivals, sharing details about their due date and gender with only close friends and confidantes.

But even they can’t be trusted not to let the cat out of the bag. Close friend Cindy Crawford was pictured holding up a pair of tiny baby suits, one with pink lettering and the other blue, apparently confirming that the Clooneys are expecting a girl and a boy. The names Casa and Migos were a tongue-in-cheek reference to George’s Casamigos tequila brand.

Pregnancy clues

It was an appearance by Amal, 39, who swapped her usual body-con look for a loose-fitting floral dress at a film screening in January, which sparked the pregnancy rumours. Amal was last seen in March, addressing the UN in New York, and later in London, speaking at Chatham House on war crimes in Iraq and Syria.

As ever, Mrs Clooney was immaculately dressed, wearing a Balmain coat and a vintage red Dior dress.

No expense spared

The Clooneys bought their Grade II-listed manor house, on a private island on the River Thames, after their wedding in September 2014.

From the start, the nine-bedroom house, which was on the market for £7.5-million, was earmarked as the ideal family home and they spent an estimated £20-million making it perfect.

Amal was last seen in March, addressing the UN in New York, and later in London, speaking at Chatham House on war crimes in Iraq and Syria. Picture: Reuters

Nesting in England

Now they’ve got the ideal spot to raise their family, George and Amal aren’t going anywhere. They’ve spent the third trimester of Amal’s pregnancy in England, with both eschewing their busy work schedules.

Last weekend, George sent his apologies to a humanitarian conference in Armenia saying if he missed the birth of his twins "he wouldn’t be going home".

Village life

George and Amal are fully integrated into village life. George surprised locals with a generous donation to the renovation of Dunsden Village Hall. They are likely to be interested in Kingfisher Kindergarten, the venue’s ‘small, friendly, stimulating and happy nursery’ for children aged two to five.

Tips from Julia

Actress Julia Roberts, a long-time friend of George’s and mother of twins herself (13-year-old Hazel and Phinnaeus), has been on-hand with support.

In a TV appearance she insisted George and Amal "are a great couple and they don’t need advice from me or anybody else".

Actress Julia Roberts has been on-hand with support. Picture: AP

Champagne on ice

Although the couple have homes in the US and Italy, they’ve opted to have their twins in London.

The favoured spot is the private Kensington Wing at the Chelsea and Westminster Hospital, where Cheryl Tweedy gave birth to her son Bear in March. There are 14 private suites, with £75 bottles of champagne available to order.

Hands-on dad

Hands-on George has pledged to stay with Amal throughout the birth and he’s admitted that he’s not entirely clueless around children. "I played a paediatrician on ER, so I know how to work on child extras," the actor explained. "If there are any accidents, I’m there. I’m the guy."

Nurse to the stars

The Clooneys’ four-acre estate has outbuildings that could house one or even two nannies.

But sources insist the couple will not be hiring a nanny, just a maternity nurse for the first six weeks, to help get the babies into a sleep routine. They are said to have chosen A-list favourite Rachel Waddilove who has worked with Zara Tindall and Gwyneth Paltrow.

Modern mom

Boasting a stellar career dedicated to raising awareness of global human rights violations, Amal is not the sort of woman to give it all up for motherhood.

The barrister has spoken of how she views her glamorous mother, journalist Baria Alamuddin, 69, as "a role model" for managing to maintain both her "femininity" and work-life "balance".

Amal plans to go back to work about six months after the birth, although she will be spending more time at her home office. Baria, who has a house close by, has promised to babysit.

Likely godparents

Favourites for godfather include George’s Ocean movies co-stars, Brad Pitt and Matt Damon, both dads with ten children between them. Also in the running is pal Rande Gerber, husband of Cindy Crawford.

As godmother, Amal’s lookalike younger sister Tala is the most obvious choice. Then there’s Julia Roberts.

British schooling

Any child of the Clooneys can apply for dual British-American nationality. However, George has been clear he plans to raise his family in the UK for the first few years. He values his wife’s British education. She won a place at Dr Challoner’s, an all-girls’ grammar school in Buckinghamshire, before reading law at Oxford.

Who's the boss?

Amal has been calm throughout her pregnancy, while George has been overawed by the prospect of having twins, describing it as an "immense responsibility".

After the birth, friends joke that Amal better get ready to bear the brunt of the work. Matt Damon predicts a steep learning curve for his close friend George.

"He’ll be great, he’ll be a mess . . . Amal will take care of everything," he said.