The 47-year-old actor was spotted flirting with Catherine Fulmer, a 27-year-old brunette, during a recent trip to the Hamptons in New York, reports FemaleFirst.
Grant and Fulmer spent time together at the A Taste of Polo event, organised by Evian last Sunday (August 31).
A source at the party revealed, "They were so cute and flirty. He got Catherine and several of her friends shots of tequila to celebrate the night."
According to rumours, Grant plans to see Fulmer at New York’s Fashion Week next week.