The Dixie Chicks are partners in name only – the multi-platinum- selling trio is all but broken up, according to a source close to the group.

Natalie Maines and sisters Martie Maguire and Emily Robison made just a handful of appearances together in 2007 – and now they rarely even talk, the source reveals.

“The girls have gone their separate ways,” the source close to the Texas-raised country musicians told The ENQUIRER.

“They were not getting along when they toured together during 2006, but they managed to stay civil. Now when they’re not forced to be together, the girls don’t even stay in touch.”

In 2007, the trio – who weathered a tsunami of criticism after Natalie bashed President Bush in 2003 over Iraq – appeared together at the Grammy Awards in February, taking home five Grammys.

They also headlined with the Eagles in Los Angeles in October.

Natalie, 33, is raising her two children in Los Angeles with husband Adrian Pasdar, star of the hit NBC series Heroes – and trying to break into acting, said the source.

Martie, 38, is pregnant and planning to move to France with her husband Gareth.

“They want to raise their 3-year-old twins and new baby in Europe, closer to Gareth’s family in Ireland,” the source revealed. “They want to settle down where they can totally disconnect from the music scene.”

Meanwhile, 35-year-old Emily has split from her husband, guitarist Charlie Robison. She’ll stay in Texas and raise her kids as a single mother, according to the source.

“It’s a strange time for the girls to walk away from such a solid career, but they’re on completely different tracks these days,” said the source.

“They’ll probably only get back together if they run out of money.”