Justin and Hailey Bieber. Picture: Instagram

Justin and Hailey Bieber exchanged new rings from Tiffany & Co. at their second wedding on Monday.

The couple - who originally wed in a secret ceremony in September 2018 - exchanged vows in front of 154 guests at the Montage Palmetto Bluff resort in South Carolina on Monday and received new wedding bands to mark the occasion.

Both Justin, 25, and his 22-year-old wife's jewellery could be seen in pictures they've shared from the big day, with Hailey wearing both the Tiffany Soleste 18-carat gold diamond-encrusted band, which is valued at $3,125, and the $2,150 Tiffany Soleste 18-carat gold and diamond V-ring.

View this post on Instagram

Looking forward to forever with you @haileybieber

A post shared by Justin Bieber (@justinbieber) on

The 'Sorry' hitmaker had the simple Tiffany Classic 18-carat gold wedding band ring, which is worth $950.

Hailey wore some other pieces from the high-end jewellers for the wedding, including a pair of over five carat diamond stud earrings which were valued at $123,000.

Meanwhile, Justin bought a $50,000 Audemars Piguet Royal Oaks watch as a "wedding gift" to himself.

Taking to his Instagram account just before he walked down the aisle, the pop star uploaded a photograph of his new lavish accessory and captioned it: "Got my self a lil wedding gift ... thanks @jadellebh (sic)."

It's not known if the 'Baby' singer also bought his wife a matching watch or not.

Justin and Hailey exchanged vows front of the likes of Ed Sheeran, Kendall and Kylie Jenner, Usher and Jaden Smith - in the Somerset Chapel within the grounds of the Montage Palmetto Bluff hotel.

It's believed the ceremony was conducted by Justin's pastor Judah Smith, while Hailey's sister Alaia Baldwin and cousin Ireland Baldwin were her bridesmaids.

Once their wedding was done and dusted, Justin uploaded a photograph of the newlyweds sharing a smooch and wrote: "My bride is [fire emoji].(sic)"