But while mirror wills are often the easiest planning approach, they’re not always the best. They signed and executed mirror wills together. In second marriages or blended families, mirror wills may be insufficient unless accompanied by structures like spousal or testamentary trusts. Mutual willsTo avoid some of the negative attributes of mirror wills, some estate planners and/or people who draft wills may suggest a mutual will. Mirror wills are a red flagIt’s not enough to note that a client has a will.