Dixie Chicks split?

Country trio the DIXIE CHICKS are hatching a secret plan to split up after the Grammy Awards next February (07) because sisters MARTIE MAGUIRE and EMILY ROBISON want to concentrate on being great mothers.

Insiders claim the siblings are "tired and wrung out" after spending the past three years defending themselves from comments singer NATALIE MAINES made onstage in London in 2003 - and they're desperate for a long-term break.
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