The couple were wed during a sunset ceremony Saturday, the report said. Among the small group of guests who attended was Nettles' Sugarland bandmate Kristian Bush.
Miller, who appeared in Sugarland's 2006 music video for "Want To," dated Nettles for more than two years before they wed, People.com said.
'How to Train Your Dragon 2' releases 5-minute clip
Yosemite climber falls 30 feet, suffers major injuries