The news seems to have slipped out thanks to friend Mike Heller, the CEO of the talent company that represents Avril.
He wrote on his Twitter page on Saturday morning (June 29): 'I'm in south of France about to see my little Rok star #avril get married I am so happy to be part of this special celebration."
He later added: "No pictures will be sent since this is #avril wedding but I will tell you everyone is so excited."
Avril, 28, met Chad, 38, last summer when he was helping her record her fifth studio album. He proposed with a 14-carat diamond ring last August, after just one month of dating.
Avril was previously married to Sum 41's Deryck Whibley.
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