The 35-year-old actress shared the good news on Twitter by posting a picture of her newborn daughter.
"I'm with her. Introducing Paloma Michaela Giles. The future is female," she wrote.
In the photo, the baby is wearing an "I Voted" sticker on top of her polka-dot onesie.
The actress had revealed that she was expecting when she walked the red carpet with a baby bump at a Television Critics Association event in August.
Scorsone is already mother to 4-year-old daughter Eliza, whom she and Giles welcomed in July 2012.
Disclaimer: No Business Standard Journalist was involved in creation of this content