Kerr, 36, and Snapchat CEO Evan Spiegel, 29, welcomed their second child together, a baby boy they named Myles.
The couple said in a statement to People magazine, “We are overjoyed at the arrival of Myles and so appreciate everyone's kind words and wishes during this special time. We couldn't be more excited to welcome our beautiful son into our family.”
Miranda and Evan are also parents to son Hart, 17 months. Kerr has an 8-year-old son, Flynn, with ex-husband Orlando Bloom.
Kerr's rep confirmed the news, telling Us Weekly, “Miranda, Evan, Flynn and Hart are looking forward to welcoming the newest member to their family.”
In June, Miranda opened up about her pregnancy struggles, telling the outlet, “I suffered quite a lot of morning sickness and I was on bed rest for a little while, then I pinched a nerve in my neck. Every woman is different. For some reason … with each three of my pregnancies, I've been super nauseous and a little more sensitive.”
Still, she said she loves being a mom. She told Us Weekly last year, “Your heart expands. You feel like your heart is already so full of love and gratitude with one, and then it just explodes even more.”