While most of us will not be marrying a prince, we can certainly channel our inner princess and wear a tiara. Meghan wore a tiara borrowed from the Queen of England herself . I don't know about you, but I don't have access to any royal jewelry archives, but there is a great selection of tiaras available to us peasants.
I think the secret to looking like a princess rather than a toddler playing dress up or a teen prom queen is looking for a lower profile tiara. Avoid styles that are too classic crown and instead look for something with just barely more height than a bejeweled headband. I also think looking for vintage options are a great way to get something uniquely beautiful and something with a bit of a patina will prevent you from looking like you got your tiara from Claire's.
Here are some of my favorite wedding tiaras of the moment: