Dylan Penn is dating legendary late actor Steve McQueen's grandson.

The 22-year-old model, who is the daughter of Sean Penn and his ex-wife Robin Wright, brought The Vampire Diaries star Steven R. McQueen, 25, as her date to her father's Help Haiti Home Gala in Los Angeles on Saturday night.

"They met awhile back, they started dating pretty quickly, lots of attraction there," a source said.

The handsome actor was overheard offering to carry Dylan when she confessed her high heels were hurting her feet.

Dylan, who landed a fashion campaign with Gap last month, came to public attention in September when she was romantically linked with Twilight hunk Robert Pattinson. The pair were first spotted together at Hollywood's Chateau Marmont hotel and again at a book launch party in November. But the insider insisted her romance with the 27-year-old British actor was merely a fling, saying, "Dylan is a fun chick, whatever she had with Pattinson was very brief if at all."

Dylan's new beau has also won the seal of approval from her Oscar-winning father, Sean. "Steven had met Sean before the event last night. [Sean] loves his daughter, really whatever makes her happy is fine with him," an insider said.