I remember that someone shared with me a tiny photo of Grand Duchess Olga in her wedding dress from a biography... the problem is that the photo was really small and it was impossible to see the details. She was wearing a Western style dress instead of the traditional wedding dress wore by Romanov brides. I supposed that if the veil is actually of Olga, it couldn't be of the second wedding because it was made of tulle. I don't know if there are descriptions of her first wedding dress and veil??