The Dixie Chicks will take the place of Lady Antebellum at the Craven Country Jamboree next year.
Lady Antebellum was supposed to be the headline act on the Saturday of the four-day Saskatchewan music festival.
However, as a result of lead singer Hillary Scott's pregnancy, the band last week cancelled a number of summer gigs, including Craven.
The Dixie Chicks have sold more than 10 million albums, with such country hits as Not Ready to Make Nice, Wide Open Spaces and Cowboy Take Me Away.
Among the other headliners scheduled for the festival are Tim McGraw and Kenny Chesney.
The festival, located next to the village of Craven, about 35 kilometres northwest of Regina, is one of the province's biggest tourist draws, attracting tens of thousands every year.