'It will be one of each!' George Clooney's mother excitedly confirms that the actor's wife Amal is expecting a boy and a girl

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Following the news that George Clooney will finally enter the realm of fatherhood at the age of 55, his mother, Nina, has confirmed that he will be dad to a boy and a girl.

In an interview with RadarOnline, the 77-year-old former city councilwoman shared her excitement over the expected June arrival for George and his wife Amal, 39.

'It will be one of each! Yes, a boy and a girl. That’s what I’ve been told,' she said from her Kentucky home. 'How marvellous! My husband and I are extremely excited.'

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One of each! George Clooney and his wife Amal are expecting a boy and a girl, his mother Nina, has confirmed

However, while she and her husband, broadcast journalist Nick Clooney, are elated about becoming grandparents again, they've yet to be let in on any clues when it comes to names for the children.

'I haven’t been told their names,' said Nina. 'That is George and Amal’s department.' 

And when the babies do arrive, they'll have some much older cousins to take care of them, as Nina shared that George's older sister Adelia 'has a 20 year old, and a 25 year old'. 

According to People, Hollywood actor George  is 'excited but nervous' as he gears up to welcome both a bouncing baby boy and girl with his wife.

Mum's the word: Nina Clooney, pictured with the actor in 2011, added that she doesn't yet know the names of her soon-to-arrive grandchildren

Everlasting love: She has been married t broadcast journalist Nick Clooney for 58 years

'He is excited about the kids, but also has the normal amount of nerves that come with being parents,' says the source.

'When George and Amal found out it was twins, they were surprised,' another source said in January, 'but also a little scared because they both had said that one was enough.

'But the news that it was a boy and a girl made them both really happy ... they can't believe in just a few months, they're going to have two babies.' 

Anxious: Like any first-time parent, George, 55, is said to be nervous about raising children

The Oscar winner doesn't have much to worry about - his better half has got them covered.

Us Weekly reported that the human rights lawyer has done most of the preparation and already selected a London hospital where she will give birth this summer, with a backup selected in New York City in case they will be travelling.

She has also designated a bedroom in their newly renovated, $12million 17th century manor just outside of London to be a nursery for the twins.  

Don't worry about a thing! The Oscar winner doesn't have much to worry about - his better half has got them covered. They are pictured above in January

Another insider prophesied that the human-rights lawyer will make a great mother. 

'(Amal) strikes me as someone who'll be a fantastic mother: intelligent, loving, funny, smart, nurturing. She doesn't seem like someone who will let kids get away with being Hollywood children.'

On Thursday, The Talk's Julie Chen confirmed the couple's double joy after confirming the news with the actor. 

The couple, who married in 2014, will welcome their two bundles of joy in June.  

Great partner: Another insider prophesized that the human-rights lawyer will make a great mom, as she is 'loving, funny, smart,' and  'nurturing.' Pictured in February 2016