It will be his eighth child and his fifth baby in less than two years.
Cannon and Tiesi were photographed together at a baby celebration over the weekend
Tiesi is recently divorced from NFL quarterback Johnny Manziel.
On Monday Cannon said he was aware of Tiesi’s pregnancy prior to the death of his son and they delayed announcing the news.
He also addressed some of the criticism he’s received for fathering multiple children, saying he’s not “impervious to hearing and reading what people say about me,” including that he’s “careless,” “irresponsible” and “selfish.”
“It definitely affects me because I’m a human being,” he said.
Cannon made headlines last year after he welcomed four children within 14 months. He is a father of seven children with four mothers, including 10-year-old twins he shares with his ex-wife, superstar Mariah Carey.
“I come from a big family, I have several siblings, being raised in an unorthodox family by my grandparents at times, I’ve experienced such a wide range of upbringing that I have such a love and passion for kids and family. I want a big family too,” he said. “The Lord has blessed me with what I asked, but ask and you shall receive. “