Blow Up of the Day!

We hope the bride to be that never was at least kept all the receipts for the various arrangements, considering the price tag.

San Antonio Spurs star Richard Jefferson left his bride hanging last Saturday, stopping cold a posh Manhattan wedding that reportedly cost $2 million to prepare, reports the New York Post.

Jefferson -- who was traded from the New Jersey Nets in June -- dumped onetime Net dancer Kesha Ni'Cole Nichols just before the weekend, according to sources. She immediately called her family and friends to say the ceremony booked at the Mandarin Oriental in Columbus Circle was off.

But Jefferson waited much longer, his friends told The Post. "He called about two hours before the wedding. It was nuts," said one Jefferson pal.

This has got to be THE most expensive breakup ever!