Ever wonder what scents the Royals wear? Or what goes into making some of the most luxurious scents in the world? There is an unheralded little store in Seattle whose owner can answer your questions. Her name is Nasreen Rehmat, founder and owner of Parfumerie Nasreen, in the Alexis Hotel. Rehmat started this little jewel box of a place, www.parfumerienasreen.com, in the Alexis 29 years ago. At that time she had 27 fragrances. Today she has more than 900. Some 80 percent of her clientele is from…