Harry Styles all smiles as he does best man duties at his mum's wedding

The One Direction heart-throb and his stepdad Robin Twist wore matching black lounge suits at the stylish ceremony.

BEST man Harry Styles beams with delight at his mother’s wedding yesterday.

The One Direction heart-throb did the honours for stepdad Robin Twist who raised him from the age of seven after mum Anne Cox split from his father.

The stylish ceremony for 42 family and friends was held at a restaurant near the singer’s family home and the partying continued until late last night.

Anne, 43, arrived for the wedding in a vintage Bentley wearing an ivory, floor-length silk dress, holding a bouquet of roses.

Harry, 19, and Robin wore matching black lounge suits. Harry’s sister Gemma, 20, was maid of honour and Robin’s son from a previous relationship, Mike, was a second best man.