The One Direction star, 19, has been pictured leaving a New York hotel with Kim Kardashian's baby sister Kendall, 18.
After the pair were first seen together last month at a restaurant, speculation has been rife about the nature of their relationship.
And today's Mirror has published new pictures of the singer and the model enjoying time together (7 December) after leaving the Gansevoort hotel and heading for breakfast.
Harry and Kendall are seen being swamped by fans as they walk across a NY street.
While some fans would love the pair to be a bona fide couple, Kendall recently attended the American Music Awards and insisted there's nothing romantic going on.
She said: "No story, we're friends. He's cool."
But when Piers Morgan asked Harry the same question at One Direction's 1D Day event, he replied: "We just went out to dinner so no… I guess. I don't know."
The teenagers were introduced by their managers last month.
Would you like to see Harry and Kendall hook up? Tell us below!
Watch the video for One Direction's single 'Story Of My Life':