George Clooney is over the moon that his wife, Amal Clooney, is pregnant with their twins, a baby boy and a baby girl — and In Touch can exclusively reveal that they plan to have a million-dollar nursery for their two new bundles of joy.

A source reveals that the little ones will take over a wing in their UK home, which will consist of "a nursery, a baby spa, a playroom, a children's library and a mini swimming pool."

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"They've also splurged on a changing table, a $10,000 Notte Fatata crib and a $19,000 armoire from one of the top baby boutiques in Beverly Hills," the insider says, adding "they're calling it a 'sanctuary.'"

In Touch first broke the news last week of Amal's pregnancy — which is possible thanks to IVF.

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“When George and Amal found out it was twins they were surprised, 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 feel like they’ve hit the family jackpot,” the source explained.

As for Hollywood's former most-eligible Bachelor, the source divulges he can't wait to be a dad.

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“He’s gone from never wanting to be a father to being totally excited about Amal’s pregnancy and the thought of raising two children who will call him Dad. He’s been doting on Amal’s every need and talking to her belly. He’s also having a blast coming up with baby names,” says the insider.

“They can’t believe in just a few months, they’re going to have two babies. They’re having so much fun looking at all the latest baby gadgets and getting everything ready for the twins. They’re going to be such amazing parents.”

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itw cover — updated