Los Angeles: 'Heroes' actress Ali Larter and husband Hayes MacArthur have welcomed their second child, a baby girl.

Ali Larter
Ali Larter. Pic/Santa Banta 

Vivienne Margaret MacArthur was born on January 15. Larter, who is already mother to four-year-old Theodore Hayes, announced the arrival of the baby girl by sharing her first picture in a post on her website on Monday night, reported Aceshowbiz.

"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 came bearing gifts for her brother: Batman sheets and lots of Gummy Bears! 7.5 lbs of love," Larter, 38, wrote alongside the picture of her newborn sleeping while being wrapped in a white blanket.