The subject came up as she talked about Harry's love of Rome and architecture during a drive around the city. "I think this is why our house looks a little bit like this," she began, "because Harry lived here for three years and he loves this."
When asked why he lived there, Rinna revealed the reason behind his European stint was his ex.
"Ursula is the movie star that you would imagine," she continued. "He said she called him and said, 'Harry, come to my room.' And so he did, at 28 years old, he went in and she got pregnant that night. And that was that, at 44. First time."
Hamlin and Andress welcomed son Dimitri in 1980, before the two split in 1983. At the time, she told PEOPLE, "I want to be with him, but he wants to go out. Love affairs and husbands can end, but a child is forever. Dimitri is my love now."
In addition to son Dimitri, Hamlin is dad to 19-year-old Amelia Gray and 22-year-old Delilah Belle, who he shares with Rinna. Andress had no other children.
Dimitri, 40, has kept a low profile in recent years, but in the past has dabbled in DJing and acting. He was most recently seen out in Los Angeles with his father in 2019 (above), and has also joined both stepmom Rinna and mom Andress on the red carpet in the past (below).