Brad Pitt and Angelina Jolie have six children now! Jolie gave birth to twins on Saturday at the Lenval hospital in Nice, France. Son Knox Leon and daughter Vivienne Marcheline were born by caesarean section and are very healthy.

Brad Pitt, 44, was in the room where his wife, Angelina Jolie, 33, gave birth to their children. He cut the umbilical cords himself, as doctor Michel Sussmann reported for Reuters. In addition, Pitt was very calm during the operation and stayed beside his wife, supporting her.

Vivienne Marcheline weighed 2.27 kg and Knox Leon weighed 2.28 kg. Marcheline was the name of Jolie’s grandmother, who died of cancer last year.

Sussmann said that he was very nervous before the operation, because he felt pressure of dealing with such a famous couple. “It wasn't pressure on a medical level, because I have been practicing for a certain number of years, but it's true that there was pressure due to the couple's fame,” he said live on Europe 1 radio.

At the hospital, the couple had an entire floor for the major event of the birth of their twins. Jolie arrived at the hospital in June, from the Provence villa. The fifth floor of the hospital was reserved for them and their entourage and dozens of reports waited outside to report the birth and maybe to get lucky with some photographs of the children.

Jolie and Pitt have four other children, a biological daughter, an adopted daughter and two adopted, Maddox, Pax, Zahara and Shiloh.

The parents sold exclusive rights to the first photographs of the twins to an U.S. magazine for $11 million which will go to charity.