Karen O Welcomes Son Django

Karen O has fallen in love at first sight.

The Yeah Yeah Yeahs frontwoman has welcomed her first child, a son, with husband Barnaby Clay, she announced Sunday on Instagram.

While she is keeping details surrounding the birth — including her baby boy’s name — private for now, the new mom did share a sweet black-and-white photo of the two cuddling.

“Shortly after we brought him home I held him in my arms and listened to Roberta Flack singing this tune,” she writes on Instagram. “I felt my heart exploding in my chest with a love I couldn’t begin to put into words so Roberta’s will have to do for now.”

Scott Legato/FilmMagic

The singer then goes on to quote Flack’s hit, “First Time I Ever Saw Your Face.”

The mom-to-be first revealed the pregnancy — and her baby bump! — when she stepped out wearing a short turtleneck dress for the Rock and Roll Hall of Fame event in April.

Much like her pregnancy, O — who released her latest album, Live from Crush Palace, in February — and the British film director managed to keep their 2011 wedding under wraps.

Courtesy Karen O

— Anya Leon