Rachel Hunter is said to be getting over her split from ice hockey player Jarret Stoll, who ended their relationship just seven weeks before they were due to marry this year, by spending time with the former Formula One racing driver.
Guests at the Cinema Society's after-party for Broken Embraces, which was held at New York's Standard Hotel, saw 40-year-old Hunter "giggling and flirting" with Irvine.
Hunter, who was previously married to singer Rod Stewart, was left heartbroken when Stoll walked out on her in June, leaving her to email guests and tell them their August wedding was off.
A source said at the time: "Rachel is absolutely devastated. Everything was in place for their wedding - she had the venue, the designer dress, the guest list.
"She has absolutely no idea why Jarret has done this. It sounds like it could be a classic case of cold feet."