Pink and Carey Hart welcomed a baby girl in LA today and announced their happy news via her Twitter. The singer wrote, "We are ecstatic to welcome our new beautiful healthy happy baby girl, Willow Sage Hart. She's gorgeous, just like her daddy." There were rumors that she had given birth earlier this week when Pink tweeted a cryptic message about starting "something new," and now they have something wonderful and new to celebrate. Congrats to Pink and Carey!