"I don't know if I can walk in a straight line that well," said Styles. "I might fumble around, so maybe not. Maybe I'll zig zag, or switch it up a little bit."
Styles, 19, was rumoured to be dating Delevigne, 21, after they were spotted together at several parties during London Fashion Week.
He turned out to watch Delivigne at the Burberry show where he was spotted sharing a joke with Sienna Miller and Paloma Faith on the front row of the show, but denied that he and Delevigne were an item.
"People talk about anything really, but we're just friends and stuff," he said. "She is a lovely girl."
More top news
Female inmates compete to create the most fabulous cell in a contest designed to ease the pain of being away from family at the holidays.
A 15 year old boy has pleaded guilty to causing the deaths of five people by dangerous driving in a car crash in Leeds.
The actress, who recently got engaged to Prince Harry, will take part in festivities on the Queen's private estate in Norfolk.