It's a sTORIbook pregnancy for Tori Spelling and Dean McDermott. The famous reality couple are expanding their brood. The actress-turned-reality-star is expecting her third child this fall. Although there have been rumors circulating that the Oxygen Network star was with child, she's now confirming the baby news via Twitter. Spelling revealed her teeny, tiny baby bump at the GLAAD awards on Sunday. The next day she broke the news Tweeting, "I know there's been a lot of speculation, so I wanted everyone to hear from me ... It's official ... Dean & I are PREGNANT!!!!" The new addition makes baby number three for the 90210 actress and number four for McDermott. The couple, who got together in 2004, are the proud parents of 4-year-old Liam and 2-year-old Stella. McDermott also has a 12-year-old son from another marriage. The impending birth comes at a good time for grandmother Candy Spelling, who's managed to get back in her estranged daughter's good graces.