She announced the news with a cute picture of her two-year-old daughter Aoife.
Aoife is shown with her hands in the air, wearing a t-shirt saying "I'm going to be a big sister!" with the caption:
"I know lots of people have been guessing and Ben and I can now confirm that Aoife is going to have a baby brother or sister next year!!! We’re all very happy”.
Una and her husband Ben Foden, a rugby player for the England team, recently celebrated their second wedding anniversary. The couple married in Ireland in 2012 a few months after their daughter was born.