The Martian star announced in a Thursday Instagram post she and her husband Jamie Bell had welcomed their second child. Captioning a photo of the newborn's feet. Earlier, Kate was photographed by Page Six holding the infant while walking to and from a shoot. Kate announced her pregnancy in a July Instagram post, captioning a photo of herself holding hands with Jamie:, “There are three of us in this pic”. The couple welcomed their eldest child in May 2019 but have still not shared the three-year-old's name.