Honestly, I don't like actual perfume because it's usually too strong and irritates my allergies to the point where it gives me a migraine. I do have a bottle of Taylor Swift's Wonderstruck for special occasions, but I think my mom ends up using it more than I do. I also have a bottle of SoCal from Hollister that I got as a holiday gift years ago, and bottles of Britney Spears' Believe and Circus, but I never wear perfume.
I'm a body spray girl
I would have to say that my "signature scent" would be the Coconut Vanilla body spray from Bath & Body Works, but they only released it for a summer, and though I have a stockpile of it, I try to alternate between that and my other favorite Bath & Body Works scent which is Wild Honeysuckle.