Mel Gibson's Alleged Mistress -- Fit for Fame

Mel Gibson's alleged mistress Violet Kowal was somehow photographed working out in L.A.'s Runyon Canyon on Thursday.

FYI -- Mel has denied having an affair with Violet ... who also happens to be a Polish fitness model.
Tags: Violet Kowal, Hot Bodies, Paparazzi Photo, Mel Gibson, Beauty, Gossip / Rumors, Photo Galleries