The playboy nuptials are off, but apparently it's too late to change the cover of the Playboy July issue. The headline? "America's Princess: Introducing Mrs. Crystal Hefner." Oops. Collector's item? Maybe.

TMZ broke the news yesterday that Crystal Harris and Hugh Hefner had a pretty awful argument over the phone and called off the nuptials, after which Crystal moved her stuff out of the mansion. The wedding had been scheduled for this Saturday. The Lifetime documentary of the courtship and wedding has been canceled also.

Sources on the Harris front say reports that Crystal was having an affair with Jordan McGraw, Dr. Phil McGraw's son, are absurd. She was absolutely not seen on a date with Jordan, and he didn't kiss her shoulder.

However, she was tired of her "couple hundred dollar" a week allowance, and wants to pursue her music career. The former Playmate doesn't think she "couldn't be married to Hef and have a successful music career."

Yeah, we don't get it either.

But don't worry! Hef's got the girls next door to pick him up and dust him off.