Pair are seen together in New York
The pair were seen enjoying a stroll on the beach in New York’s exclusive Hamptons region.
And they also attended the Taste Of Evian Polo event together.
Catherine, 27, is a fashion designer and Hugh, 47, may even make an appearance at her New York Fashion Week show later this month.
The actor has previously dated Liz Hurley, 43, and Jemima Khan, 34.
Hugh’s spokesman refused to confirm the romance.
‘They just met at a party,’ he tells The Sun.