Avril Lavigne‘s life is about to get a little more complicated, the Canadian singer has filed for divorce from Sum 41 rocker Deryck Whibley after three years of marriage.

Avril filed the divorce in L.A on Oct. 9, citing “irreconcilable differences.”

The 25-year-old punk-pop princess is asking a ruling to block Deryck, 29, from receiving spousal support.

Court records show fellow Canadian, Deryck, was granted a request to add Lavigne’s last name to his in December 2007.

Avril announced the split a month ago on her Web site. “Deryck and I have been together for 6-and-a-half years.

“We have been friends since I was 17, started dating when I was 19, and married when I was 21,” she explained. “I am grateful for our time together, and I am grateful and blessed for our remaining friendship.

“I admire Deryck and have a great amount of respect for him. He is the most amazing person I know and I love him with all my heart. Deryck and I are separating and moving forward on a positive note.”

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