Are you ever just in the mood to feel 'expensive'? I am ... Created by Kilian Hennessy, Kilian is the go-to fragrance brand of some of the world's top celebrities, including Rihanna and Beyoncé. So it ...

Roja Parfums, for example, has several expensive perfumes ... for a great perfume, what really drives up the price tag is how rare it is. Scientists don't know exactly why, but only about one ...