Pre-nuptial agreement is a simple tool used by parties to protect their financial assets from the break-down of a marriage. These agreements are generally signed six months prior to marriage, wherein the parties exchange financial disclosure and negotiate the terms of the division of assets at the time of breakdown of marriage. Actress Kaley Cuoco was successful in saving most of her financial assets by having a pre-nuptial agreement put in place prior to marriage:
http://www.torontosun.com/2016/05/09/kaley-cuoco-finalizes-divorce-from-ryan-sweeting