Niall Horan was the star attraction for fans at Wednesday's Pro-Am ahead of the ISPS Handa World Invitational at Galgorm Castle.
He's co-founder of the Modest! Golf company that is presenting this week's tournament.
James Nesbitt and Brian McFadden were among the other showbiz names proving their golfing prowess while sports stars like Tommy Bowe, AP McCoy and Pat Jennings were also in action.
Solheim Cup star Charley Hull got in her final practice ahead of the tournament that is being played across both Galgorm and Massereene Golf Clubs between Thursday and Sunday.
Among the other big names in action are Europe's Solheim Cup captain Catriona Matthew as well as Northern Irish stars Stephanie Meadow and Cormac Sharvin.
Check out all the photos in our gallery above.
Belfast Telegraph Digital