Nikolaj and Nukâka's youngest daughter, Safina Coster-Waldau, was born on Nov. 5, 2003. The actor had the sweetest things to say about his daughter for her milestone 16th birthday in 2019. "Today our second born @safinawaldau is 16. SIXTEEN. So happy and proud of the youngest member of our little family. Fun, sweet, smart, quirky and independent," Nikolaj wrote on Instagram.
According to Safina's Instagram, she's also signed to Lindberg Management. Her IMDB page reveals that she's appeared in the short film "Dagdrømme og Mareridt," TV series "Det Forsvundne Ravkammer" and "Theo & Den Magiske Talisman," and Danish singer Wafande's music video for "Lad Dem Prøve." She also starred in "Salsa" alongside Filippa.
In 2021, Safina made a rare public appearance with her parents by attending the opening ceremony for the fourth Canneseries festival with them.