There's a movie called Gainsbourg - Heroic Life in which actor Eric Elmosnino plays Serge Gainsbourg.
It's a biography of this famous person.

And as far as the trailer is concerned it features a lot of scenes in which you can see Mr. Elmosnino's bare feet in all possible angles (sitting barefoot at a piano, in a bath tub...).

That's the reason why I'm convinced that this movie includes all things for us (tops, soles...).