"Dean, Liam, Stella, Hattie, and I are beyond thrilled to announce that another little McDermott is on the way! We feel truly blessed that another angel has found us," Spelling wrote, which was accompanied by a photo of her growing baby bump.
The “Beverly Hills 90210” actress wed actor Dean McDermott in 2006. They have since starred in a series of reality television shows on the Oxygen Network.
Spelling, 38, and McDermott, 45, have both expressed their desire to have a large family.
“You lost your mind after the second one, so the third, fourth and fifth, it's like you're so far gone, it's just kind of the same,” the actress revealed.
McDermott, who has a son from a previous marriage, added “As soon as I saw it was positive and it was a pregnancy, we both thought we need to have a fourth – at the same time.”
The newest addition to the McDermott clan will join brother Liam, 5, and sisters Stella, 3, and Hattie, born October 2011.