The Film 2011 presenter shared the news with her followers on Twitter, posting: "Thank you very much for your messages. It's true I'm having a baby. Although to be frank, on the scan it looked more like a goat."
And she then revealed that she was suffering from pretty bad morning sickness, replying to pal Lauren Laverne's congratulations with: "I am HURLING like never before. I SMELL OF SICK."
And she continued: "re. sickness. am drinking ginger beer and eating marmite. It's actually repulsive..."
Don't worry Claudia, we quite understand. A girl's gotta do what a girl's gotta do.
The 39-year-old and hubby Kris Thykier already have two kids, Jake, 7, and Matilda, 4. She is now four months pregnant so is expected to have her baby in July or August.