John Lennon's son Sean and Paul McCartney's son James are good friends just like their famous fathers?MORE: Paul McCartney shares rare loved-up photo with wife Nancy ShevellSean Ono Lennon and James McCartney shared a rare insight into their friendship back in 2018 when they shared a selfie on Instagram in the midst of what appears to a jamming session and fans couldn't believe their resemblance to their legendary dads."You two definitely look like your famous fathers.