Dwyane Wade and Gabrielle Union will tie the knot on Saturday and those who attend will be forbidden from speaking about it.

The Miami Heat star and actress want the details of their wedding to be quiet and are willing to go to great lengths to assure that happens. According to TMZ, the couple are making guests sign a confidentiality agreement.

Anyone wishing to attend the ceremony are required to sign the agreement and once they leave must clam up about anything they see, otherwise they face a large monetary fine.

Back in July, the site obtaned a copy of the wedding invitation which forbid guests from bringing cameras or cellphones to the event.

"For the comfort of our guests and to protect our privacy, no cameras or cell phones will be permitted at the party," the invitation says. "Also, photo IDs will be required for all guests."

While Wade and Union are doing their best to keep much about the wedding quiet, some details are known. The couple will tie the knot in Miami, though any more specific a location is unknown, Entertainmentwise reports.

Also, some known invited guests include Kevin Hart, Chris Bosh, LeBron James, Kelly Rowland and La La Anthony.

image courtesy of INFphoto.com