(PILA)

1 If the spouses trans­fer their dom­i­cile from one state to an­oth­er, the law of the new dom­i­cile ap­plies with ret­ro­act­ive ef­fect as from the date of the cel­eb­ra­tion of mar­riage. Spouses may ex­clude ret­ro­activ­ity by writ­ten agree­ment.

2 A change of dom­i­cile has no ef­fect on the ap­plic­able law if the spouses have agreed in writ­ing that the former law shall re­main ap­plic­able or if they are bound by a mar­it­al agree­ment.