I would not necessarily agree with that, given my experience as a wedding guest, but when in doubt, bring a suit jacket
Kate always adheres to these rules, especially when she sits in the Royal Box
The two even dress in opposite colours (white, pink, and bright red for Urara, black, dark red, and dark blue for Rice), and in opposite styles (a Japanese gym uniform compared to what could be mistaken for a funerary dress)
Jackies wedding dress was widely praised, but newspapers and magazines often referred to it as being by a colored dressmaker or didnt mention her at all, including Jackie herself
Make your own Ranch Dressing, Blue Cheese Dressing, Creamy Cilantro-Lime dressing (made with Greek yogurt), Red Wine Vinaigrette, Balsamic Vinaigrette, or French dressing (which is a lot like Russian dressing)