“Here is our beautiful baby girl River Rose; 6lbs 6oz, 18 inches, and the greatest thing on the planet :)” the proud new mom tweeted.
The 32-year-old singer, who gave birth to her daughter on June 12, announced the happy news last week on her Twitter account.
“Thank you everyone for all of your well wishes! Brandon and I are on cloud 9!!” she wrote.
Kelly Clarkson and Brandon Blackstock were married last October, and the following month the singer revealed that she and her husband were expecting.
River Rose is the first child for the singer and the third for her husband, who also has two kids for his previous marriage, Savannah, 11, and Seth, 7.