LONDON, ENGLAND - SEPTEMBER 06: Sir Paul McCartney poses for photograph at the "Hey Grandude!" book signing at Waterstones Piccadilly on September 06, 2019 in London, England. (Photo by Tim P. Whitby/Getty Images)
LONDON, ENGLAND - SEPTEMBER 06: Sir Paul McCartney poses for photograph at the "Hey Grandude!" book signing at Waterstones Piccadilly on September 06, 2019 in London, England. (Photo by Tim P. Whitby/Getty Images)