Where the designation of the applicable law is made before the marriage, the future spouses present to the civil registrar either the act by which they made this designation, or a certificate issued by the person competent to draw up this act. The certificate shall state the surnames and forenames of the future spouses, their place of residence, the date of the act of designation and the name, capacity and residence of the person who drew it up.
When the designation of the applicable law is made during the marriage, the spouses shall carry out the publicity measures relating to the designation of the applicable law under the conditions and in the form provided for in the Code of Civil Procedure. If they have entered into a marriage contract, the applicable law so designated is mentioned on the original of the contract.
On the occasion of the designation of the applicable law, before the marriage or during it, the spouses may designate the nature of the matrimonial property regime chosen by them.