"Alanis Morissette and Mario 'Souleye' Treadway welcomed a baby boy, Ever Imre Morissette-Treadway, on Dec. 25th," a rep for the singer said. "All are healthy and happy."
Morissette, 36, announced her pregnancy in August, three months after she wed rapper Souleye.
Souleye and Morissette began dating in 2009. This is their first child.