Brook and boyfriend Thom Evans are expecting a baby girl, the model confirmed on Twitter. The baby will mark the couple's first child.
"Thom and I are happy to announce we are expecting a baby girl. We are delighted XXX (sic),' the 31-year-old tweeted on Wednesday.
According to a source for the Daily Mail, Brook recently received the results of her three-month scan, and she and the baby appear to be healthy.
Brook and Evans started dating last November.
Brook reportedly posed fully nude for Exhibition magazine earlier this year.
The model-actress said last month that she has no interest in starring in a soap opera despite rumoured offers.