The "Legends" actress announced on Monday on her website that she and her husband, Hayes MacArthur, welcomed a daughter on Jan. 15.
"It's a girl! We couldn’t be more excited to share news of the arrival of Vivienne Margaret MacArthur on Thursday January 15th 2015," she wrote on her website. "She came bearing gifts for her brother: Batman sheets and lots of Gummy Bears!!! 7.5 lbs of love."