Ashlee Simpson attacks Pete Wentz' ex

Accordingt to Perezhilton.com, Pete Wentz' wife Ashlee Simpson was in a verbal altercation with Wentz' ex lover Michelle Trachtenberg at the Wiltern Theatre in Los Angeles, where heaps of celebs gathered for the 'DJ Hero' launch party.

Apparently Simpson got pretty drunk and started giving old Wentzy a lapdance, right in front of Trachtenberg - the couples were seated at the same table for some reason. 

An eyewitness said, "She was grinding up on Pete like a stripper. It was actually pretty disgusting". Things heated up JUST A LITTLE BIT when Simpson screamed "I hope you know, the whole time you were dating Pete, I was fucking him!”. How charming.

Mark Hoppus' (Blink 182) wife had to restrain Simpson from making a complete douche out of herself.