Following on from the frankly magnificent photo of Paul McCartney eating chips in a Fair Isle tank top, the provenance of both tank top and chips seem to have come to light in a section of the Magical Mystery Tour that was lost to the cutting-room floor.
In the film, the Fab Four visit Smedley's chop shop in Taunton, and the tank top - and ideed the chips - can both be spied in this still:
I imagine that the chips in this picture were provided by Smedley's on that day in 1967. Though PM may well have been an habitual eater of chips in awesome tank tops.
The full story - from the Press Association - is here, and here is the tank top in full-colour awesomeness: