Yes, Starbucks does have the cotton candy Frappuccino. It is on their secret menu. Not only the cotton candy Frappuccino but also they have chocolaty, mocha coffee, vanilla bean,  caramel ribbon, s’mores crème, java chip, white chocolate, Strawberry, Caramel Brulée, Pumpkin Spice, Smoked Butterscotch, Chai Crème, Espresso, Matcha Green Tea, Chestnut Praline, and Horchata Almondmilk.