Tori Spelling is pregnant with her fourth child.

The former 'Beverly Hills 90210' star has announced she is expecting another baby with husband Dean McDermott, which will be a Little Brother or sister for Liam, five, Stella, three, and five-month-old Hattie.

Writing on her website, Tori said: ''Dean, Liam, Stella, Hattie, and I are beyond thrilled to announce that another little McDermott is on the way! We feel truly blessed that another angel has found us. Love, Tori xoxo.''

Tori - who married Dean in May 2006 - has made no secret of her desire to have a large family and said soon after Hattie's birth that she wanted another one.

The 38-year-old reality TV star revealed: ''People say, 'Oh my God, it's utter chaos after two.' But it's not, it's great.

''You lost your mind after the second one, so . the third fourth and fifth, it's like you're so far gone, it's just kind of the same.''

Dean, 46, added: ''As soon as I saw it was positive and it was a pregnancy, we both thought we need to have a fourth - at the same time.''