Also, just thought I'd mention this - if you want your fragrance to last forever, keep it stored in the original box and in a dark, cool place.
It's tempting to want to display the beautiful bottles (and nothing wrong with that, especially if it's your signature scent and you go through it often!), but if you are a fragrance nut like me, proper storage is everything. If you keep a bottle sitting on your dresser for a few years, the scent will change and/or fade.
Whenever I purchase a new scent, I always decant it into a small sprayer and use the sprayer instead of the original bottle. I keep all my decants in a zipped beauty case and each one is labeled with my handy-dandy label maker.
I have fragrances that I purchased in the 80's that still smell perfect!