Vanessa Carlton Gives Birth to a Baby Girl

This is the first child for the singer and her husband, John J. McCauley.

— -- Vanessa Carlton is a new mom.

The singer/songwriter and her husband, rocker John J. McCauley of the alternative band Deer Tick, welcomed a daughter.

"Thanks for all the sweet wishes on our daughter. She's the quiet observer," Carlton tweeted Tuesday. "We are in for it."

McCauley also posted a photo of himself holding the new baby, captioning it, "Sid the Kid, whoa!!!"

This is the first child for the couple, who announced the pregnancy last summer. While the singer was ecstatic about becoming a mother, she also announced that her new album would have to be released this year instead of last.