Usher has eloped with long-time girlfriend Grace Miguel.

The 36-year-old singer, who got engaged to his ''incredible partner and manager'' in January after approximately six years of dating, has reportedly jetted off on honeymoon to Havana, Cuba with his new wife following their low-key wedding.

A source told that the pair secretly tied the knot over Labour Day weekend in the US at the beginning of this month.

The pair were originally planning to exchange vows during a lavish ceremony in front of 100 guests in Atlanta, but decided to elope instead, according to the insider.

The star's new gold wedding band can be clearly seen in recent pictures posted on Grace's Instagram profile.

Usher, who has sons Naviyd Ely, six, and Usher Raymond V, seven, was previously married to Tameka Foster for two years until 2009 and secured primary custody of their children following their split.

The 'I Don't Mind' hitmaker gushed about his relationship with Grace last October, saying: ''I have an incredible partner and manager. She has helped me through some of the hardest times in my life and my career. She's someone who's been able to support and understand all of who I am. Not just as a dancer or as a performer or as a singer, but as a humanitarian and a business man and as a person.''