Justin Bieber has paid tribute to his "beautiful sweet girl" as he and wife Hailey celebrated their first wedding anniversary.

The couple tied the knot with a star-studded ceremony in Bluffton, South Carolina, last September and marked their first year of marriage with posts on social media.

The 26-year-old singer shared a black-and-white snap of him kissing his new wife on their wedding day and told his 23-year-old partner "I am so lucky to be YOUR husband!"

Bieber added: "You teach me so much everyday and make me such a better man! I am committed for the rest of our lives to empower you to be the woman God has called you to be!

"My heart is to enable you to achieve all of your wildest dreams! I promise to always put you first, to lead with patience and kindness!! Happy anniversary my beautiful sweet girl."

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Model Hailey shared several pictures from her big day and wrote: "1 year ago we had the best wedding. Wish I could live this day over and over."

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The Biebers shared an intimate look at their wedding earlier this year when it featured in the singer's documentary series.

Fans were shown never-before-seen footage of the ceremony, including Hailey walking down the aisle while an emotional Bieber watched on.

The couple became engaged in July 2018, having previously briefly dated in 2015.