Sean Penn's new girlfriend has been identified as the 24-year-old daughter of fellow actor Vincent D'onofrio.

The Oscar winner flaunted his burgeoning relationship while on a beach vacation in Hawaii on Wednesday (05Oct16), when he was photographed kissing and frolicking with a mystery blonde.

Now Sean's new lady has been revealed to be the offspring of another Hollywood star - Daredevil villain Vincent D'Onofrio.

Leila George, 24, is Vincent's only child with his first wife, Greta Scacchi, who is the same age as 56-year-old Penn. The Milk star is just one year younger than D'Onofrio.

The young beauty appeared to have no issues with the age gap between herself and Sean as they enjoyed a dip in the ocean this week, and they made no attempt to hide their feelings for one another as they openly hugged and locked lips.

However, they were not alone on their Oahu getaway - they were joined by Leila's pal, Australian actress Gracie Otto, reports People.com.

George recently appeared opposite James Franco and Tori Spelling in a remake of the Beverly Hills, 90210 star's cult TV movie Mother, May I Sleep with Danger?, while she also features in Franco's new film, The Long Home, which also stars Ashton Kutcher and Josh Hartnett.

Sean has a thing for blondes - he dated Charlize Theron for 18 months until last summer (15), and briefly romanced Scarlett Johansson in 2011, months after the Avengers actress split from first husband Ryan Reynolds.

Penn was also previously married to Madonna and Robin Wright, the mother of his two children, daughter Dylan Frances, 25, and son Hopper Jack, 23.