Delta Goodrem and her long-time partner Matthew Copley are married.

The Australian singer announced she was engaged last year, after the guitarist proposed in sunkissed Malta. The happy couple are believed to have returned to the European country to exchange vows on Monday.

According to New Idea, Delta and Matthew invited guests to join them for an extravagant celebration held over several days.

A host of famous faces were present for the wedding, including former Nine journalist Airlie Walsh, TV presenter Renee Bargh and Delta's best friend Danielle Cox. Also in attendance were Delta's mother Lea and her brother Trent.

It has been reported the couple had been planning the nuptials for two years and sent guests a lavish invitation detailing the wedding schedule.

Following the official wedding ceremony on Monday, the newlyweds celebrated their union by hosing a party at a luxury seaside club on Tuesday. Delta was photographed wearing an electric blue swimsuit and sarong as she proudly showed off her wedding band.

Delta chose Sydney as the location for her hen do, which took place in April this year.

However, the 40-year-old star returned to Malta for the wedding ceremony.

The country holds a special place in the couple's heart, with Delta previously revealing Matthew's family are from Malta and many of her band members and backup singers also have Maltese heritage.

The former Neighbours star has kept her relationship with Matthew out of the spotlight since they started dating in late 2017.

In 2018, she told InStyle Australia that she had made a "conscious decision" to not discuss her love life.