States have different rules for prenups. California requires an agreement be signed at least seven days after it has been presented, that both parties have attorney representation and that all assets should be disclosed, Nachshin says.
Those requirements were added to the law after the state Supreme Court upheld baseball star Barry Bonds' prenuptial agreement, despite it being signed a day before his wedding and without his future wife having counsel, according to Nachshin, who represented Bonds.
Other circumstances to keep in mind are to never sign such an agreement after having a few drinks and to not present such an agreement when a woman is pregnant, because her medical condition could lead to it being overturned, Nachshin says.
"Remember to talk about it with your spouse way before you plan your wedding, and have it signed four months before you plan on getting married," Nachshin says. "Because otherwise, you're so focused on the prenup that you can't focus on the joy of marriage."