Katherine Jenkins will give a charity concert on Tuesday evening to help raise £500,000 for the church where she began singing.
The Welsh classical star returns to St David's in Neath to perform for its restoration appeal.
It hopes to raise enough money for essential repairs to the church tower and roof above the choir stalls.
St David's is where Katherine learned to sing and where she still performs at Christmas. The singer was also christened there.
Canon Stephen Ryan, Rector of Neath said "We are delighted that Katherine is helping us with our fundraising appeal.
"I know she holds St David's Church in great affection, and as a community we are extremely proud of her success. "