Dixie Chicks star Natalie Maines is making this year's Independence Day really mean something personal after filing for divorce.

The Not Ready to Make Nice singer has split from actor Adrian Pasdar after 17 years of marriage.

Maines cites irreconcilable differences in her divorce petition, but sources close to the couple insist the split is amicable and both stars want what is best for their sons Jackson Slade, 16, and 12-year-old Beckett Finn.

The singer is asking for joint custody.

Natalie wed the Heroes star in Las Vegas in 2000. The couple reportedly met at Dixie Chicks star Emily Erwin's 1999 wedding.

This is Maines' second failed marriage - she wed her South Plains College boyfriend, bassist Michael Tarabay, in 1997, but filed for divorce two years later, also citing irreconcilable differences.