Vanessa Matsunaga gave birth to her second child, David, on October 18, 2018.
She introduced David on Instagram earlier today, October 26, eight days after his birth.
In the post, Vanessa wrote her son a touching letter.
It read: "Dear David,
"You are now 8 days old and mommy is so so proud of you. You are a fighter and you came into our lives to bring a joy that’s inexplicable.
"We were three and now because of you we are a family of four and our hearts couldn’t be fuller."
It filled Vanessa's heart to see her firstborn Isabella so happy to have a brother.
She continued, "You bring so much joy to your big sister, Isabella. All she speaks about is you.
"She's still very young but all she tells me is: 'good job, mommy!' and 'thank you mommy for baby brother'
"The two of you made my life more meaningful and I understand God’s grace even deeper now.
"Thank you for choosing me as your mommy...
"Mama, Papa, Titas, Titos, and your cousins are very excited to get to know you and spoil you.
"You just arrived and you're already bringing so much positivity in this world.
"God has great things for you, my love. I [heart] you forever Baby David!!
"David Nery Matsunaga Sunga born October 18, 2018"
The Japanese-Brazilian model first broke the news to her Instagram followers about her pregnancy on August 9.
Later on, the second-time mom revealed that she was going to have a baby boy.