Now that it's finally starting to warm up outside, we're already pretending it's summer. We want every meal to come straight off the grill, on a picnic blanket in the park, or followed by campfire-toasted marshmallows. And, apparently, Starbucks is right there with us, because the brand’s latest limited-edition Frappuccino is the drinkable version of our childhood summer favorite treat — s'mores!That's right, everyone's favorite coffee chain is rolling out a S'mores Frappuccino that will hit menus beginning April 28. That means it will be almost two weeks before we can actually order the drink, but we have a sneaking suspicion that — like sleepaway camp — s'mores in a cup is going to be well worth the wait.The S'mores Frappuccino starts off with a layer of marshmallow-infused whipped cream and a layer of chocolate sauce. Then comes the actual blended beverage, a combination of " graham, coffee, milk, and ice ." It's all topped off with, you guessed it, another helping of marshmallow-whipped cream, and the BEST part: graham cracker crumble. Excuse us while we go make an actual s'more to tide us over until the 28th. ( Cosmopolitan