Harry Styles to be best man at mother's wedding

One Direction star Harry Styles is reportedly set to serve as the best man at his mother's wedding.

The 19-year-old singer's mother Anne will exchange vows with her long-term partner Robin Twist and the boyband hunk will play a pivotal role in the ceremony, reported Daily Mirror.

"Styles will be a best man at the ceremony, along with Robin's son Mike," a source said.

The singer's One Direction bandmates are also expected to attend the celebration.

Styles' parents divorced when he was seven years old.