The couple's new baby will join their son and daughter. Two-year-old Stella Doreen McDermott was born in June 2008, while their first child Liam Aaron McDermott -- who is four-years-old -- was welcomed into the world in March 2007.
Liam was born one week before the first-season premiere of Spelling and McDermott's Tori & Dean: Inn Love Oxygen reality series, and Spelling coincidentally gave birth to Stella a week before the third-season debut of Tori & Dean: Home Sweet Hollywood.
Although the Tori & Dean stars are thrilled about the pregnancy, 37-year-old Spelling plans to keep the sex of the baby a mystery.
"We've been blessed with a boy and girl already, so this time we've decided to do it the traditional way and not find out the sex," she toldPeople.
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