Almost there ... Tori Spelling on August 28, two days before the birth of her third son.

Almost there ... Tori Spelling on August 28, days before the birth of her second son.

Actress Tori Spelling has given birth to her fourth child.

The former Beverly Hills, 90210 star and her husband Dean McDermott welcomed a baby boy, Finn Davey McDermott, on Thursday.

Spelling announced the news on her website, torispelling.com, with a photo of the newborn's hand grasping her finger, under the heading "It's a boy!"

Little Finn joins siblings Liam, 5, Stella, 4, and Hattie, 1. Spelling fell pregnant with Finn when Hattie was only one month old, leading her mother to tell the press that she was pregnant "a little too soon".

Spelling has said this pregnancy would be her last, recently writing on her blog, "I couldn't be happier that I'm finally at the end and I get to meet the baby so soon, but I actually love being pregnant, so if it is my last, I'll be sad never to be pregnant again.

"It'll have been a precious moment in time and it'll be over with, so it is sad."

Spelling attended a publicity event with her husband and two older children only two days before the birth, and was recently seen using a mobility scooter to get around. 

Visit our gallery to see other stars who are expecting, including Adele, Drew Barrymore and Anna Paquin. You can also check out the most unsual baby names in Hollywood.