Davina and Donald named their little bundle of joy Hudson.
"My baby Hudson is home for #MothersDay! I had never experienced true love or happiness until I met you, my sweet boy, on May 8th at 11:58pm," Davina wrote on Instagram alongside a sweet photo of the newborn sleeping.
"That is when my life truly began and I discovered the real purpose of my life starts and ends in loving, protecting, and supporting you to be the man you are meant to be."
"Hold on, Hudson... Daddy and I are going to take you on so many adventures... #babyboy #newborn #reallove."
When the pair appeared on the show, Davina was a 34-year-old pharmaceutical sales representative and Sean was a 35-year-old trauma nurse.
Things appeared to end badly when Sean called Davina "egocentric" and hurt her feelings by saying unflattering things to the Married at First Sight relationship experts without addressing such issues with her first.
Davina and Sean chose to part ways at the end of the show, and they ultimately went through with a divorce.
Davina went on to marry Donald in July 2016 and take his last name.