Phoenix Emmanuel Sursok-McEwen was born on Tuesday, Sursok's rep told the magazine. She weighed in at 9 pounds, 12 ounces.
Sursok, 30, and husband Sean McEwen, revealed that they were expecting in June by posting a photo of Sursok's positive pregnancy test.
This is the first child for the couple, which wed in 2011.
Sursok plays Jenna on the ABC Family series. The show's annual Halloween episode airs Oct. 22 at 8/7c on ABC Family.