The singer welcomed her first child with husband Brandon Blackstock on Thursday and announced the happy news on Saturday.
PHOTOS: Kelly Clarkson through the years
The “Since U Been Gone” hitmaker shared the happy news via Twitter.
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!!
— Kelly Clarkson (@kelly_clarkson) June 14, 2014
Clarkson confirmed she was pregnant four weeks after she and Blackstock wed in Tennessee in October, and she revealed the baby was a girl in January, tweeting, “I knew it! Only a girl could cause this much drama with all this vomiting ha!”