Sound the alarms: Starbucks' Valentine's cups have landed in stores! Four adorable cup designs hit shelves on January 3, with plenty of time left for you to snag your favorite design (or a few of 'em) ahead of Valentine's Day. Of course, the Starbucks Valentine's cups are covered in nothing but pinks, reds, and hearts.You're not gonna want to miss this year's Starbucks Valentine's cups, because just like any reusable cup, they let you take $0.10 off your coffee order, plus earn 25 bonus stars...