Singer Sir Elton John and his partner David Furnish appear holding their newborn baby son on the cover of Us Weekly.

The couple became dads to Zachary Jackson Levon Furnish-John on Christmas Day. The 7-pound, 15-ounce baby was born in California via a surrogate.

In the cover story, Sir Elton and Furnish talk about their long road to parenthood and what it's like to finally hold their son.

“I think he's getting more handsome by the day,” Sir Elton said, adding that newborns often “look a bit like Winston Churchill, their faces all scrunched up!”

“It's a constant wonder that someone that small could be so strong. The lust for life, the craving for life when he first came out … that little thing could survive so many things.”

Furnish said his partner was a natural father: “He's proving to be a natural! I thought it might be awkward – but [he's] diving in, rolling [his] sleeves up.”

And the couple added that neither know who the biological father is.

“Neither of us cares,” Furnish said. “He's our child. The important thing is that he's healthy and happy and loved.”

The 63-year-old Sir Elton also made headlines this week when he said that he was “fed up” with the rhetoric of gay rights opponents, including the church.