updated 02/01/2011 AT 11:45 AM ET
•originally published 02/01/2011 AT 6:45 AM ET
Christina Applegate is a brand new mom – of a baby girl, her rep tells PEOPLE.
“Actress Christina Applegate and fiancé, musician Martyn LeNoble, welcomed daughter Sadie Grace LeNoble on Thursday, Jan. 27, 2011 in Los Angeles,” the spokesperson said in a statement. “Mother and daughter are doing great.”
Adds someone close to the proud parents: “She’s a beautiful little girl, and they are so happy and in love with her.”