Country superstars The Dixie Chicks is composed of founding members (and sisters) Martie Erwin Maguire and Emily Erwin Robison, and lead singer Natalie Maines. The Dixie Chicks broke through big beginning in 1998 with hit songs "There's Your Trouble" and "Wide Open Spaces." As of 2012, the Dixie Chicks have won 13 Grammy Awards, including five in 2007 for Taking the Long Way — which received the Grammy Award for Album of the Year — and "Not Ready to Make Nice," a single from that album. By February 2013, with 30.5 million certified albums sold, and sales of 27 million albums in the U.S. alone, they had become the top selling all-female band and biggest selling country group in the U.S. during the Nielsen SoundScan era. The Dixie Chicks continue to tour the world.