The 19-year-old singer gave his mother Anne away as she married Robin Twist, and he engaged guests with his emotional speech at a party in a restaurant after the ceremony last week, reported Sun online.
Andy Pear, the owner of Pecks restaurant in Cheshire, said, "His speech was very witty. He had everyone roaring with laughter. And it was very emotional - people were in tears. He comes across as a very intelligent, engaging young man. He wrote the speech himself and it lasted around 10 minutes."
"Harry couldn't stop smiling. He hardly left his mum's side and she looked really proud of him. He sipped champagne and talked to everyone," a source said.