Singer Justin Bieber is reportedly a married man.

People magazine reports that the pair, who got engaged in July, tied the knot in front of a judge in New York City.

"They went ahead and did it without listening to anyone," a source close to the couple told the site.

TMZ reported that the 24-year-old singer and the 21-year-old supermodel will have a ceremony in Canada next week in front of a small group of people.

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They were married a day after they were spotted at a marriage license courthouse in photos obtained by TMZ.

Bieber's mum, Pattie Mallette, seemed to hint at their nuptials in a tweet.

"Love is unconditional," she wrote.

Bieber and Baldwin became engaged on July 7 after having dated on and off in 2015 and 2016.

The news came as a shock as Bieber had only just split from his childhood sweetheart, Selena Gomez months earlier.

Baldwin is the daughter of actor, Stephen Baldwin and the niece of Alec Baldwin.

She told Stellar magazine she was "beyond excited" about getting married.

She said she tries to block out negative criticism of her relationship.

"I don't think it's affected me really. I have learned to just try my best to ignore the negativity at this time so that I can enjoy this season of my life," she said.