Tori Spelling is pregnant with her fifth child.

Tori Spelling

Tori Spelling

The former 'Beverly Hills 90210' actress and her husband Dean McDermott - who already have Liam, nine, Stella, eight Hattie, five, and Finn, four, together - are "really excited" to be adding to their family again, though the news came as a shock.

Tori told People magazine: "It was a total surprise. But we always wanted a big family. I'm really excited."

The 43-year-old star and her husband - who also has an 18-year-old son, Jack, from his previous marriage - feel like they are "starting over" with the new baby.

Tori said: "Dean was saying, 'We just got Finn out of diapers; I thought we were in the clear!'

"For the first time this year, they're all in school. So it's like, wow. We're basically starting over."

But Tori and Dean, 49, think the baby has come along at the "best time".

She said: "This baby happened at the best time.

"Nothing is ever perfect, but I'm so madly in love with my husband and with our kids. The idea of adding to that is such a blessing."

Tori previously admitted she edited her reality show 'Tori and Dean' to hide her spouse's temper from their fans.

She said: "I was controlling it as best I could. I was being real, but I knew not to let it go to a certain place. I knew Dean had a temper, and I didn't want that on camera, because that didn't serve us well. We were like America's sweetheart couple. Why would I do that? There were some things where I'd be like, 'You guys have to cut that out.'"

And Tori admitted that she saw a different side of Dean when they filmed the show.

She said: "I was the executive producer. I looked at every edit. I basically protected our relationship through that. At first, it was fine, but it was a new relationship for us. All of a sudden, we got pregnant, and then I saw a different side of him. Not that I didn't love him. But I thought, I didn't sign up for this. Wait, you didn't show me this. He said, 'If I had shown you that side, you wouldn't have been with me.' That's not fair."