Pink and husband Carey Hart. (Larry Busacca/GETTY IMAGES FOR NARAS)

“We are ecstatic to welcome our new beautiful healthy happy baby girl, Willow Sage Hart,” the singer said via Twitter on Thursday, perhaps surprising some with the only slightly unusual name choice. “She's gorgeous, just like her daddy.”

The 31-year-old, born Alecia Beth Moore, sent a mysterious tweet yesterday, hinting at her baby’s impending arrival: “New Moon in Gemini today :) a good time to start something new.”

The couple announced the pregnancy in November.