Marc Jacobs launched his youthful fragrance, Daisy, in 2007 with great success. And this month, the designer is shaking things up by offering a limited-edition bottle of Daisy called Sticker Edition ($57). It has the same lighthearted floral aroma as the original scent, but in whimsical springtime packaging that includes stickers. For die-hard Daisy fans, it's a must — but if you already own the scent, there isn't an urgent reason to buy it... or is there?