Mistress In Brinkley Divorce To Testify

The divorce between Christie Brinkley and Peter Cook is getting dirty! Not only was Christie just granted her wish to have the trial open to the public, but now the mistress in the case has been subpoenaed. 

Diana Bianchi, who had been having an affair with Cook for over a year when they were caught, may have to take the stand. And Diana's lawyer says that if she is called, she will be honest. Talk about awkward! 

We hope Christie takes Cook for everything!