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

Vanessa Carlton Welcomes a Daughter

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Vanessa Carlton is a mom!

The singer and her husband John McCauley welcomed a daughter on Tuesday, Jan. 13, the couple announced via social media.

Sidney Aoibheann Carlton-McCauley was born yesterday at 1:42 p.m., weighing in at 8 lbs., 1 oz.,” Carlton posted on Instagram, sharing a photo of herself and baby.

“Sid the Kid, whoa!!!” the Deer Tick singer-songwriter captioned an Instagram photo with his daughter in the operating room.

“Thanks for all the sweet wishes on our daughter. She’s the quiet observer. We are in for it,” the new mom Tweeted.

In the days leading up to the delivery, Carlton, 34 — who confirmed her pregnancy in June — admitted she was ready for her daughter’s big debut.

“10 months pregnant & honestly dreaming of the moment I can start this cause I’m officially waddling,” the musician Tweeted, along with a photo of one of Tracy Anderson‘s postpartum workout DVD.

But there were plenty of pregnancy perks that Carlton enjoyed — like taking a taxi without having to wait.

“It took being mega pregnant for someone to give up their cab in NYC but nevertheless it was as sweet as I dreamed it would be,” she joked on Twitter.

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— Anya Leon