Catherine Zeta-Jones and Michael Douglas will bring a touch of Hollywood glamour to south Wales when they visit a children's hospital.
The couple will meet patients and their families at the Children's Hospital for Wales in Cardiff.
Catherine, 40, who is originally from Swansea, is patron of the hospital's charity, the Noah's Ark Appeal, and officially opened the hospital with Michael, 65, in 2006.
During their tour they will witness the progress made by the charity to raise £7 million to fund projects including replacing equipment in the new critical care unit and buying an open MRI scanner so parents can lie by their child during a scan.
The couple have been married since 2000 and have two children, Dylan Michael, nine, and Carys Zeta, seven.