You're in luck, dear readers: we've got a Tiara Alert, and a brand-new princess wearing it!
This is Princess Nathalie of Sayn-Wittgenstein-Berleberg, daughter of Princess Benedikte and, by extension, the niece of Queen Margrethe. Nathalie raises horses and rides in equestrian events professionally -- she's sort of Denmark's answer to Zara Phillips.
(Nathalie's also been making headlines recently because of her personal life -- she announced in January that she was engaged to Alexander Johannsmann [he's standing next to her in the photo]. Then, at the end of March, she revealed that the two of them already secretly got married in a civil ceremony ... and that she's expecting a baby! ¡Olé!)
Here, Nathalie's wearing one of her mother's tiaras: Queen Ingrid’s Star and Pearl Tiara. If only we had a better close-up of it, since for once it's not hidden behind one of Benedikte's impressive up-dos!