These By Kilian Hennessy fragrant necklaces ($195-$465) are the ultimate luxury accessory. Each piece can be infused with the scent of your choice through the silk cords or a hidden ceramic plate. While I love the aroma they give off, it's the design of these baubles that draws all the attention. You can select between a tassel or locket look, and there are also leather bracelets for men. Any pick will make the perfect bridesmaid or groomsman gift this wedding season.