The couple were married in July 2006 and have no children together. Lavigne cited "irreconcilable differences."
The 25-year-old punk-pop singer burst to fame with her 2002 debut album "Let's Go."
Lavigne is asking a ruling to block Whibley from receiving spousal support.
Court records show Whibley was granted a request to add Lavigne's last name to his name in December 2007.
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