Crystal Harris Plan to Dump Hef at the Altar for $500,000?

Sources say Hef's fiancee was planning to ditch him at the altar for a reality show. But now Crystal Harris tells Ryan Seacrest why she had a change of heart.

What's worse than being dumped 5 days before your wedding? How about being dumped at the alter! Just ask Hugh Hefner...

There it is in all it's glossy glory- Mrs. Crystal Hefner...America's Princess. This is the cover of the new issue of Playboy Mag that's about to hit news stands Friday.

Problem is- Crystal Harris- dumped Hugh...but now we're hearing she was planning on doing it at the alter for a huge paycheck!

A SOURCE TELLS THE NEW YORK POST,

"Crystal wanted to ditch Hef at the altar. Her plan was to walk up the aisle and say she couldn't go through with it. The wedding was to be filmed for a reality special, and her refusal to marry him would be a sensation. She was looking for a tie-in deal of around $500,000 for the exclusive 'I ditched Hef at the altar' interview.

SERIOUSLY? NOW THAT'S LOW, EVEN FOR A GOLD-DIGGER...

THE SOURCE ADDS, While there was interest, Crystal didn't get an offer anywhere near half a million."

MAYBE THAT'S WHY SHE CHANGED HER TUNE, BECAUSE ON WEDNESDAY THIS IS WHAT SHE SAID ON RYAN SEACREST'S RADIO SHOW.

"For a while I've been having second thoughts, when did you start having second thoughts, for a while now...they were going to air a show on it...it was just going so fast...it just it just wasn't.

Oh- btw- Crystal is rumored to be dating Dr.Phil's son Jordan- although her rep denies the claims and says the two are doing business together.