We were as shocked by this news as anybody. After all, wasn't DJ AM recently engaged to Nicole Richie? Twice.
That's almost as many pounds as Lionel's daugther has put on the last nine years. Combined.
Anyway, it appears as though Nicole has moved on with Samuel Plouchart - and now the DJ is stepping out with a new leading lady, as well. He was recently seen with Michelle Trachtenberg (pictured below) at night club, Stereo.
Trachtenberg's Eurotrip co-stars had no comment, but we wonder if Brody Jenner cares. He did date Richie for awhile.
Which means he's sort of slept with DJ AM. And Lauren Conrad has sort of slept with Trachtenberg. That's hot.