Prosecution's star witness set to testify against R Kelly today

The moment we've been waiting for has finally arrived. The prosecution's (supposedly) lethal witness, Lisa Van Allen, is set to take the stage today in the trial against R. Kelly. Why is she such a big deal? Here's the hook(er): She claims she had a threesome with Kelly and the underage girl in the video for which he is being prosecuted for. Watch this video from CBS station in Chicago to find out more about the star witness.

One fun fact: She appeared in Pissy's "I Wish" video braiding his hair. That definitely means they go way back.

Is the prosecution planning on calling on R. Kelly's wife? They need to. I'm sure her used-and-abused ass can shed plenty of light on the situation.