Смотрите что нашла, уж если этим по этикету можно ,то автору и подавно.https://www.google.ca/search?q=red+dress+for+wedding+sweden&sa=X&biw=1440&bih=799&tbm=isch&imgil=VgtypSsGfH9y1M%253A%253BeLTthGsspOdb-M%253Bhttp%25253A%25252F%25252Fwww.gettyimages.com%25252Fdetail%25252Fnews-photo%25252Fqueen-margethe-of-denmark-attends-the-royal-wedding-of-news-photo%25252F477048284&source=iu&pf=m&fir=VgtypSsGfH9y1M%253A%252CeLTthGsspOdb-M%252C_&usg=__JD_oVpqqHq40Cefpr1yoG31og-w%3D&ved=0ahUKEwiiidSQ3oTNAhVE7YMKHXlDApcQyjcIOg&ei=A7xNV-J7xNqPBPmGibgJ#imgrc=VgtypSsGfH9y1M%3A