Singer Kelly Clarkson welcomed her first child with husband Brandon Blackstock on Thursday and revealed the news on Twitter today.

She happily announced: "Our baby girl River Rose Blackstock arrived on June 12th! Thank you everyone for all of your well wishes! Brandon and I are on cloud 9!!"

The couple got married in Tennessee in October, and she revealed her pregnancy news four weeks later. In January she told fans she was expecting a girl. "I knew it! Only a girl could cause this much drama with all this vomiting ha!" she said.

Clarkson's friend Martina McBride recently said of the former "American Idol" star: "She's really fun. Kelly's outgoing and very direct and I feel like she's be a fun mom.

"She has a really good head on her shoulders and she's a strong person. I think that will be good for her and her child as well."