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Hollywood has a new mommy today - Christina Applegate.
ET has learned that Applegate, 39, gave birth to a healthy baby girl last week.
"Actress Christina Applegate and fiancé, musician Martyn LeNoble, welcomed daughter Sadie Grace LeNoble on Thursday, Jan. 27, 2011, in Los Angeles," Christina's rep told us. "Mother and daughter are doing great."
In August, the former "Married with Children" star tweeted about her pregnancy experience, writing, "I joke about the 'woes' of pregnancy, but the truth is, I am enjoying every second of this incredible journey. I feel blessed and grateful."
Applegate and LeNoble, 41, have been in a relationship for over two years and are currently engaged.