Claudia, who already has two children with her film producer husband Kris Thykier, is expecting the latest addition to their family in August.
The 39-year-old presenter announced her happy news in March, saying her unborn tot looked more like a goat than a baby on the scan. She also said she was suffering from awful morning sickness, quipping 'I am hurling like never before. I smell of sick.'
Claudia's new baby will join siblings Jake Leonard, eight, and Matilda Martha, five.