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.
Mel Gibson's Alleged Mistress -- Fit for Fame
8/5/2010 5:35 PM PDT BY Johnny Lopez
Get TMZ Breaking News alerts to your inbox