Kim Kardashian Topless Painting -- Did Kim & Kanye West COMMISSION It For Their Wedding??

Kim Kardashian and Kanye West's egos DO know a limit, after all -- TMZ has learned they are disavowing any knowledge of a partially nude painting of Kim ... allegedly commissioned for their wedding.

A report from across the pond this week said Kanye had contacted a street artist named Bambi to do a thong-baring painting of Kim entitled "Perfect Bitch" -- which, by the way, looks nothing like her in the face. Bambi nailed the ass though.

But sources close to the couple tell TMZ ... neither of them know ANYTHING about this -- no painting was ever ordered, nor does Kim want one. This should sound familiar ... another artist, Monica Warhol, claimed the same thing last year.

We spoke to Bambi's manager, who's standing by Bambi's story and claims Kim's people should be receiving the artwork any day now.