Tori Spelling Baby Arrives, Family Welcomes Finn Davey

Tori Spelling and her husband Dean McDermott have welcomed their fourth child, Finn Davey, on Thursday evening.

The baby boy arrived weighing 6 pounds and 6 ounces, as announced on the happy parents' blog just hours after his birth.

"We are so excited to announce the birth of the newest member of the McDermott family," read the post, signed, "Love, Tori, Dean, Liam, Stella, and Hattie."

The post also came complete with an image of the actress' finger holding the newborn's hand, and noted that Finn Davey was "20 inches long."

Spelling and McDermott have been married since 2006. Finn Davey joined older brother Liam, 5, and older sisters Stella, 4, and Hattie, 1.

When Spelling announced her fourth pregnancy back in March, many fans were surprised since the actress had just given birth to Hattie months before.

Fans were not the only ones surprised; Spelling revealed that she and her husband also learned about the pregnancy in a most unexpected way.

"We found out the news together, I had chronic migraines and I was in the emergency room getting treated for one of my migraines and when I got there they said, 'Before we can treat you, you have to do the pee in the cup,'" explained Spelling, according to Access Hollywood.

"And I said, 'Oh, don't worry I'm not pregnant. I just had a baby a month ago.' And they [said], 'Sorry, it's a policy at the hospital,'" she continued.

"So I did it, and they came back and said, 'You're pregnant!' And I said, 'That can't be!'" she exclaimed.

After undergoing further testing for the pregnancy, Spelling and McDermott let the news settle in.

"Dean and I kind of sat there in shock for a while and then we said, 'Well, we wanted four… This is when our miracle wanted to come … so we'll take it," she said.

Finn Davey is McDermott's fifth child; Jack, the actor's eldest child from a previous relationship, is now a teenager.

The former "Beverly Hills, 90210" star keeps her fans up-to-date by frequently posting on Twitter. Spelling was enjoying her pregnancy and being home with her daughter just days before welcoming Finn Davey.

"Stella just said to me 'well mom… I guess you have a bun in the oven' don't know how she even knows that saying! Made me laugh," wrote the actress.