The Photograph singer bought Avril Lavigne a lavish 17-carat diamond ring for their first wedding anniversary.

The Here's to Never Growing Up hitmaker, who married the Nickelback frontman, 39, at Château de La Napoule in the South of France on 31 July, 2013 admitted she is still shocked over his generous gift.

The 29-year-old singer shared a photograph of them, in which she is wearing the dazzling piece of jewellery, on Twitter.

The new diamond sparkler is larger than the 14-carat pear-shaped engagement ring the rocker proposed to the blonde beauty with in early 2012, but slightly smaller than her 20-carat emerald wedding ring, which is estimated to have cost approximately $1 million, reported US Weekly.

The Complicated singer, who was previously married to Sum 41 star Deryck Whilbley, recently admitted she can't wait to start a family with Chad, but insisted they are too busy at the moment.

She said: "I'm really focused on my career at the moment.

"Down the road, I would love to be a mom, just not right now."

Chad previously said: "We both want children. We just need to find a time we're both at home to get around to it."