Dec thanked his fans for all their lovely messages.
Dec Donnelly and his wife Ali Astall are expecting their first baby together.
The presenter, 42, confirmed the happy news on Twitter following reports the couple were having a baby.
He shared a black and white image of the parents-to-be on their wedding day, and wrote: “Just wanted to say thank you for all the lovely messages.
“The news has sneaked out a little earlier than we had hoped but Ali and I are delighted to be expecting our first child.
“Thanks for all the love, we really appreciate it D x.”
Dec and Ali tied the knot in 2015.