John Lennon's son SEAN is spending time with singer/actress Lindsay Lohan to help her research her forthcoming role in CHAPTER 27 - a movie about his father's 1980 assassination.

The unlikely pair have been spotted together at various New York City hotspots including notorious nightclub Bungalow 8, reports the New York Post.

Chapter 27 sees Lohan, 19, star alongside Hollywood hunk Jared Leto, who plays murderer Mark David Chapman.

Thirty-year-old Sean, whose mother is Yoko Ono, split from longterm love Bijou Phillips in 2004.