The Complicated singer officially tied the knot with Chad Kroeger on July 1 at a chateau in the South of France.
In true rock chic style, she donned a strapless black Monique Lhuillier gown and carried a bouquet of black roses, as seen on the cover of Hello! Magazine.
The Nickelback frontman chose to match his rocker bride and also wore all-black.
The Canadian star did opt for a flowing white gown for the pre-wedding event but then swapped for the ceremony.
The pair wed at the Chateau de la Napoule medieval castle near Cannes, capping off a three-day "crazy" celebration in front of 110 guests.
"I wanted to make sure it's a crazy vacation and an experience of a lifetime for our guests," the 28-year-old told Hello!.
"I wanted it to be over the top. I'm obsessed with castles and I love French decor and goth ... I found this castle in France and we visited it and it was perfect."
The couple has been engaged since August last year when the frontman proposed during a whirlwind week in Paris with a 14-carat diamond ring.
They fell for each other last February while Chad was helping Avril record her fifth studio album, Here's To Never Growing Up.