The Desperate Housewives star and the NBA star will wed on July 7, 2007. The ceremony will take place at the Chateau de Chantilly in France, the country where Parker was born.
A source told Us Weekly magazine, "Tony is extremely superstitious and thinks 07-07-07 is the day most lucky to get married on."
The magazine also revealed that Longoria will be married in a gown designed by Monique Lhuillier. Longoria, 31, and Parker, 24, have been dating since November 2004.