Personalities other than George and Amal Clooney already begin to show in their children.
The couple, who welcomed the twins Alexander and Ella on June 6, requested the help of child care expert, Connie Simpson, who spoke to PEOPLE for this week's issue about the famous family before of the release of his new book The Nanny Connie Way .
"It was really fun because the girl was such the essence of her mother and the little boy is the essence of her father," says Simpson, who has helped other famous couples such as John Krasinksi and Emily Blunt and Justin Timberlake and Jessica Biel.
"He just grew up … you could see he was manifesting every day. You were with them," he adds. "The look George has in his films, his son was also showing that and I thought it was the nicest thing." They are all cute together. "
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From her, Simpson reveals to PEOPLE, "She only has that delicacy and that beautiful glow like Amal and it was really fun to see Children face the personality of their parents. "
" The nonsense you see in George in his movies, that little sticky look in those eyes, "explains how baby Alexander looks like his father." It was amazing because once again, family. "
Simpson explains that she "came out of retirement" to help the Clooneys, and that the experience of caring for two babies at once inspired her in her work, even more.
"Working with twins, it made me think of a saying: chess, not checkers," he says. "Because you have to stay three moves, and there are not two identical babies, if you have a girl / boy situation, you will be able to learn about the two different sexes from the beginning, and that is different, but it is a blessing. "
RELATED VIDEO: George Clooney speaks with twins in Suburbicon Premiere with wife Amal
Amal, 40, recently gave Vogue a look at the new life of The couple as parents of two children, posing for the May cover story of the publication and revealing that the twins have said their first words.
"We've had some & # 39; Mamas & # 39; & # 39; Dadas & # 39;" shared the human rights lawyer, Adding to her husband 56-year-old actor, "George was very careful to make sure that "Mum" was the first word. "
The Nanny Connie Way: Secrets to Master the First Four Months of Parenthood is now available at amazon.com.
For much more from Nanny Connie Simpson, look for the latest issue of PEOPLE in newsstands on Friday.