Avril Lavigne’s ex husband Deryck Whibley caused quite a stir, when he and his girlfriend Ari Cooper decided to go to a Halloween party dressed as Avril and her fiancé Chad Kroeger. Deryck decided to go to the party dressed as Avril, while Ari went as Chad and once Chad heard what happened, he had a little dig back at Deryck.
Upon learning of the stunt by Deryck and Ari, Chad took to his official Twitter account to say, “Hey Deryck loved the costumes! we were going to dress up as you guys this year but all the parties had celebrity themes haha! -CK (sic).”
This led people to believe that Kroeger was unimpressed by Deryck and Ari but he did in fact see the funny side of it. He later tweeted again, saying, 'You owe us a couples bowling grudge match see you when I get back from Russia! -CK (sic).''
Avril Lavigne and Deryck Whibley were married to each other from 2006 until 2009 and, despite their divorce, the two of them are still friends. Deryck helped out Avril with her 2011 album Goodbye Lullaby, where he was a co producer and guitarist.