Alanis Morissette
A representative for the 36-year-old singer said in an email Ever Imre Morissette-Treadway was born on December 25.
The e-mail says "all are healthy and happy."
No other details were available.
Morissette, whose songs include Ironic and You Oughta Know, has won several Grammys, including album of the year for 1995's "Jagged Little Pill."
She also earned a Golden Globe nomination for best original motion picture song for Wunderkind from The Chronicles of Narnia: The Lion, the Witch and the Wardrobe, and appeared as God in Kevin Smith's 1999 film Dogma.
She had been previously been engaged to actor Ryan Reynolds.
