The singer is affianced to Nickelback frontman Chad Kroeger.
The couple have been quietly dating for six months.
Lavigne, 27, and Kroeger, 37, aboriginal got calm in February to co-write a song for Lavigne’s accessible fifth flat album.
“A adventurous accord blossomed as they spent time autograph together,” a Lavigne pal told People magazine.
On Aug. 8, Kroeger popped the question, presenting Lavigne with a 14-carat design sparkler.
“He makes her so happy,” a ancestors antecedent said. “Both of their families could not be added excited.”
It will be Kroeger’s aboriginal cruise bottomward the aisle, and the additional alliance for Lavigne, who breach from Sum 41 frontman Deryck Whibley in 2009. She had also dated Brody Jenner.