The Westlife gang's brood is gearing up for a new addition later this year, as Mark Feehily has just revealed that he is going to be a dad.

The Sligo man took to Instagram to announce that he and his fiance Cailean O'Neill are going to be daddies.

"This is the proudest moment of our lives and we are beyond excited to say it out loud!" he said, sharing a pic that showed the couple and an image of an ultrasound scan of their baby.

https://www.instagram.com/p/ByAjTDTomJt/

The couple, who got engaged in the Maldives last February, have been together for over four years.

His Westlife bandmates joined in the chorus of congratulations, with Kian Egan saying "Such huge excitement here today! Not only is it @markusmoments birthday but then for him and Cailean to share there news that THEY ARE HAVKNG A BABY! Aggggggggggghhhhhhh... you gotta love this westlife family!  10 westlife babies now!!!"

Shane Filan, meanwhile, also shared the same picture and said "So happy for you both. Can’t wait for westlife baby number 10 to arrive."

Westlife recently kicked off their 20th anniversary world tour, which hits Dublin's Croke Park on July 5th and 6th.