Zayn Malik treats mom to house

Zayn Malik has bought his mother a mansion.

The One Direction member and bandmates Harry Styles, Liam Payne, Louis Tomlinson and Niall Horan are gearing up to release their documentary This Is Us.

In the latest trailer, Zayn is shown breaking the news to his mother that he has bought her a new house in their hometown of Bradford, England.

The clip shows his mom, Trisha, and two of his three sisters pick up the keys to the mansion, worth hundreds of thousands of pounds.

As they wander through its vast rooms, they exclaim, "It's lovely!"

Trisha then rings the singer to express her gratitude, affectionately calling him 'sunshine'.

"I know that you always used to say, 'I'll get you a house one day when I'm older'. But thank you for what you've done for us. I'm so proud of you," she gushes in the video.

Zayn answers: "Well, get off the phone then before I start crying."

The boys rose to fame after appearing on the UK edition of The X Factor.

Despite not winning the competition, they have gained fans the world over and are currently busy with their Take Me Home Tour.

In the latest trailer, the lads also reveal how they come from humble beginnings and simply love music.

"We just come from normal working class families," Zayn explains.

"It'd be like three in the morning and I'd be singing at the top of my voice. That's where it kind of started."

This Is Us hits cinemas worldwide from August 28.