“6 months old and ready to party! Happy birthday, my sweet Vivienne. I am so grateful for you everyday day. Thank you for bringing such peace and joy into our lives,” the Heroes alum, 39, captioned the cute photo of 6-month-old daughter Vivienne.
In a series of pics, the actress shared some family photos – including husband Hayes MacArthur and their 5-year-old son Teddy – enjoying the summer.
“At my happiest when I am by the ocean with my family. #summer,” she captioned an image with her baby girl.