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Avril Lavigne Halloween Diss: Chad Kroeger Slams Singer's Ex-Hubby Deryck Whibley for Mock Costume

Deryck Whibley Twitter

Avril Lavigne's life is as complicated as ever. 

Her ex-husband, Deryck Whibley, dressed up as the 28-year-old singer for Halloween this weekend. Deryck's girlfriend, Ari Cooper, also dressed up as Avril's current fiancé, Chad Kroeger.

Needless to say, the Nickelback musician was not amused.

"Hey Deryck loved the costumes!" Chad tweeted from his band's account. "We were going to dress up as you guys this year but all the parties had celebrity themes haha!"

Did you know Avril is cousins with Justin Bieber and Ryan Gosling?!

Lavigne and Whibley, 32, divorced in 2009 after three years of marriage.

The "Wish You Were Here" singer told Ryan Seacrest's KIIS FM show in 2011, however, that she and the Sum 41 frontman were on good terms.

"He's one of my best friends, and we work really well together and we stay in touch," she said. "I think we're very lucky. We've been friends for a really long time and we always will be family. We have a connection. Things are good. I'm really grateful for that."

We have to wonder if things are still good between the exes now.

If Deryck wants to dress as Avril again, he has lots of hairstyles to choose from!

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