From here:
Catholics who have married outside of the Catholic Church are encouraged to have their civil marriage recognized by the Church. We call this a convalidation. These couples, who were no doubt well intentioned and sincere in professing their vows outside of the Catholic Church, are not considered validly married in the eyes of the Catholic Church because Church law requires baptized Roman Catholics to marry before a bishop, priest, or deacon and two witnesses. If a couple finds themselves in this situation but want to have the Church officially recognize their marriage, then they should contact a priest in order to begin the process of convalidating their union. This process is usually not very difficult and often helps the couple live their faith more fully.I told the husband I was expecting jewelry as this will be just as meaningful, if not more so, than our first marriage. I'll let you know if he comes through.
Our 26th legally recognized marriage will occur on January 6, 2016, also known as the 12th Day of Christmas, and Epiphany. That date was prayerfully chosen back in 1989 so it would fall on the Day of Epiphany. You can figure out the significance.