Prince Albert and Princess Charlene of Monaco

Prince Albert and Princess Charlene of Monaco

Prince Albert of Monaco is busy childproofing his home.

The 56-year-old royal is expecting twins with his former Olympic swimmer wife Princess Charlene and is said to be eagerly awaiting their arrival, according to his close friend, New York plastic surgeon Dr. Jon Turk.

He told People magazine: "The princess told me that he's been walking around their residence and their summer house, starting to childproof the houses.

"He's worried about the corners of tables. And she's saying they're not even born yet! He's also going to put air in all the balls for soccer and basketball. He's already getting ready and it's still years away before they can play with a ball."

The friend of the family has also revealed how the Prince learned about Charlene's pregnancy.

The Doctor explained: "An excited Charlene telephoned Albert and said, 'We're going to have a baby!'

"They called him out of a meeting, and he was very excited, but then had to go back to the meeting."

He added: "She had to call him back when they saw a second baby on the sonogram.

"He was busy in a meeting [and she didn't know why she was calling] and reluctant come out. But when he came out, she said, 'We're going to have two babies!' Two calls for two kids!"

Dr. Turk is trustee of the Princess Grace Foundation, which was set up in the honour of Albert's mother.