Justin Bieber has shared a sweet throwback picture with Hailey Baldwin ahead of their imminent wedding ceremony.

The couple, who secretly married last year at a New York courthouse, are preparing to celebrate their second wedding in front of family and friends in the coming days.

Bieber took to Instagram to share a baby-faced picture of them as teenagers, writing: "My wife and I where it all began."

Bieber and Baldwin have known each other since they were teenagers, but it wasn't until 2016 that their friendship blossomed into a romance.

In July 2018 they confirmed their engagement and married in a small courthouse ceremony two months later.

The couple are reportedly set to tie the knot at the Montage Palmetto Bluff hotel in South Carolina on Monday (September 30). It is expected to be a star-studded ceremony.

Earlier this year, they opened up about the struggles in their marriage and their deep love for one another during an interview with Vogue magazine.