The Danish actress and model, who has been married to Mattia Dessi since 2006, welcomed her baby girl Frida into the world in June.
Taking to Instagram at the time, Nielsen said: 'Our precious little Frida, our true love. ❤️'
On the day Nielsen gave birth, she shared an Instagram selfie with Dessi. Brigitte also gave a special Father’s Day shout out to her hubby.
"You'll be a great papà ❤️ Ti amo 💋 #fathersday #daddy #love #family," she wrote alongside a pic of them sitting in a car and him touching her baby bump.