After welcoming their first child a week before the first-season premiere of their Tori & Dean: Inn Love Oxygen reality series, Tori Spelling and Dean McDermott have expanded their family a week before the third-season debut.

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Spelling gave birth to Stella Doreen McDermott on Monday evening via a planned C-section delivery at Los Angeles' Cedars-Sinai Medical Center, OK! Weekly reported.  The baby girl weighed 6 pounds, 8 ounces.

"She's here! She's a healthy baby girl," Spelling's rep told OK!.  "Tori and baby are resting comfortably."

Spelling and McDermott welcomed their first child together -- Liam Aaron McDermott -- last March prior to the debut of Tori & Dean: Inn Love, which followed the couple as they left Hollywood to run the Chateau La Rue bed-and-breakfast in Fallbrook, CA. 

The show's second season aired late last summer and the couple revealed in January that they were expecting their second child together.

"I've always wanted a little girl since I'm such a girly girl," Spelling told People in March when she learned she was having a girl. "I immediately started crying. I couldn't believe it. I have my beautiful little boy and now I'll have my little girl! It's amazing."

Stella Doreen -- whose middle name is derived from McDermott's late mother -- may be the newest addition to the family, however her arrival wasn't in time to be included in Tori & Dean: Home Sweet Hollywood, the third season of their Oxygen reality series that will premiere Tuesday, June 17 at 10PM ET/PT.

The new season will follow the couple as they leave Fallbrook and buy a new home in Hollywood; pursue new business ventures; search for a preschool for Liam; and prepare for Stella's birth.

"The pregnancy has been a big part of this season," Spelling told reporters during a recent conference call.  "I've been pregnant all season. We're not going to be covering the birth obviously. But it will figure into the season, the baby being born."