Webcam Model Site Drops XXX-Rated 'Bombshell'

Michelle McGee -- Jesse James' alleged mistress -- also modeled for a second adult webcam site ... and for this one, she took it all the way.

The extremely graphic photos and video were just posted on a site called OnHerCam.com.

According to the site, McGee "started working here approximately 2 weeks after she first started seeing Jesse James" -- but her employment didn't last long because the site operators believed McGee "wasn't a good fit."

Funny, even a porn site is taking Sandra Bullock's side -- calling Jesse's alleged behavior "quite disappointing."