Paul McCartney high-fives fans at 'The Beatles' docu world premiere

At 74, the 'The Beatles' singer Paul McCartney defies everything old age can limit, proves his appearance at the London world premiere of Ron Howard's 'The Beatles

Joined by another member of the band, Ringo Starr, the English singer-songwriter paid plenty of attention to his fans dashing towards them to give high-fives and flashing a thumbs up to those he couldn't greet, reports the Daily Mail.

The pair was reportedly accompanied by their wives, Barbara Bach and Nancy Shevell as they all spent a gala time posing for photographs in front of the world's media.

The documentary screening, which features the band's behind-the-scenes footage, interviews and unheard music as it rose to superstardom fifty years ago, saw a star-studded premiere at London's Leicester Square.

Olivia Harrison and Yoko Ono, the widows of the deceased members, George Harrison and John Lennon also attended the premiere together.

Notable music A-listers attending the celebration include Madonna, Michael Keaton, Terry Gilliam, Michael Palin and Liam Gallagher.