Gary Goldsmith — younger brother to Kate’s mom Carole Middleton — says the royal couple are flourishing as parents.

“It’s fabulous. I couldn’t be prouder of my family,” Goldsmith told Britain’s Grazia magazine.

“It’s been a fairy tale right from the beginning when Carole told me Kate was dating William, to seeing my little niece everywhere in the press and then to the wedding. And now there’s a baby who’s actually going to be the king.

“They’re doing absolutely brilliantly.

“Kate has her feet so solidly on the ground, and William knows his own mind. They will be absolutely perfect and are a proper couple who are madly in love.

Goldsmith called the new parents “incredibly modern. They’ll be everywhere together.”

“I don’t think they will pass the responsibility of their babies to other people.

“They will be involved in everything George does, and you’ll see them as a unit of three now rather than a unit of two.”

Goldsmith then discussed rumors his other, less-famous niece, Pippa Middleton, is engaged to her boyfriend.

“It will be brilliant when Pippa gets married. It will happen one day,” he said.

“It’s hard for anyone entering this family because you’re going to be in the spotlight.

“So I imagine Pips and James will date for a while before they make the leap, simply out of courtesy for the other person to understand what it’s like.”

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