Check out these similar top, leggings, shoes, smartwatch and earbuds
When I think of coat dresses, the scene I always picture is the royal family headed off to church on Christmas morning
High Neckline
When it comes to jewelry, think delicate gold layers or colorful beaded earrings (such a good dupe for my beloved Grainne Mortons) that pull from the dresss palette
The entire cloth is a Royal Silk cloth which is extremely gorgeous and appropriate for a newlywed too
The image which mouviciel so usefully linked is self-explanatory, but it is not true for Rome or Vatican City only, all the churches in Italy have something similar being displayed IF they are regularly visited by tourists (otherwise, the same rule holds but there is no specific warning, as the people who go there would know)