The Titanic actor - who often keeps a low profile in a cap and dark glasses - appeared in high spirts as he wore a satin shirt and black tailored jacket, looking as dapper as ever.

DiCaprio couldn't wipe the smile off his face as he posed with the 82-year-old Rolling Stones legend, who sported a bright orange and purple scarf and black cap.

Pierce Brosnan and his son Dylan were also in attendance at the event and posed for the photos with the legendary pair.

Director Olivia Wilde, Hannah Waddingham as well as Richard Gadd also joined in on the celebration.

A day earlier to this, Leonardo DiCaprio attended an in-conversation at BFI Southbank to promote his latest film. For the Wednesday event, he wore a brown plaid suit.

One Battle After Another -directed by Paul Thomas Anderson - is based loosely on Thomas Pynchon's 1990 novel Vineland.