The Take That singer took to Twitter to share his exciting news.
First of all he teased fans...
I have some amazing news to share with you all.....— Howard Donald (@HowardDonald) August 24, 2015
Some of Donald's followers hoped new tour dates were about to be announced, but other eagle-eyed fans claimed to have already known about Halil's pregnancy having spotted her with a "baby bump" in Newcastle.
Then 10 minutes later he revealed...
Katie and I are having a baby!so proud of my beautiful wife and can't wait for the newest member of our family to arrive.— Howard Donald (@HowardDonald) August 24, 2015
Along with the month the baby is due...
Thankyou for all your wonderful messages.
The baby is due early jan.
Boy or girl? Guesses on a postcard plse— Howard Donald (@HowardDonald) August 24, 2015
Which would mean Halil is around four to five months pregnant.
This will be Donald and Halil's first child together, but the singer is already the father of two daughters from previous relationships: 16-year-old Grace and 10-year-old Lola.
Grace's mother is Victoria Piddington, while Marie-Christine Musswessels, who he split from in late 2009, is the mother of his second child.
Donald first met Halil when Take That filmed a Marks & Spencer Christmas TV advert in 2008, but they only started dating two years later and they wed in a secret ceremony in January 2015.
Donald has promised that when the baby arrives there will be a special edition of his regular #thingsonhowardshead photo.
In January there will be a special edition of #babyonhowardshead— Howard Donald (@HowardDonald) August 25, 2015
Previous highlights include:
Morning ya,llJuly 31, 2015