Thanks! The gift was done as a surprise for me so the colors were artist's choice, but the design of it is something I came up with particularly for her.

To answer your question, she's a part of the same main canon as my major cast, living in the modern coastal city of Costa Caprica (Same place that a few of my other characters like Sunny and Reyers reside in). The outfit looks a little old-fashioned by design, with the blouse being loose and easy to open so that it isn't damaged if Sierre's inner nature gets the best of her (see also her "The Siren's Lure" series). The mantle over the top, then, gives her a little extra chest and shoulder coverage and also helps make sure that the short sleeves of the blouse don't accidentally slip down and reveal too much.