Kathy Griffin and Randy Bick are officially over. The comedienne filed for divorce from the marketing executive on Friday, December 29, according to court documents obtained by a news outlet. She listed their date of separation as one week prior on December 22, citing “irreconcilable differences.” The legal filing also clarified that there was a prenuptial agreement in place that Griffin requested to be enforced by the court. Griffin and Bick split less than two weeks before they would have celebrated their fourth anniversary. That same day, the comic appeared to acknowledge the split in a pos…