13. The Queen Selects a Bride for Her Wedding Tiara

Reason: The king owns the tiaras.
Exception: None
A very specific royal rule that Queen Elizabeth II had when she was alive was that she would always choose the tiara for a royal woman getting married. This restriction became well-known after the Queen allegedly turned down Meghan Markle’s request to don an emerald and diamond tiara.

A bride’s wedding tiara is chosen by the Queen. ©Pool/Samir Hussein/Getty Images
Meghan had to select a new tiara because the late Queen felt that wearing the Greville Emerald Kokoshnik Tiara wouldn’t be proper. The Queen was not one to impose her will on other people’s attire, but she was particular about tiaras.