Snooki doesn't need an excuse to party -- but when it's her birthday, she goes all out! The Guidette celebrates her 24th in Las Vegas on Nov. 13, hitting the dance floor with a drink in hand. And we can take a good guess as to what's in that clear, lime-garnished beverage. After losing 25 pounds in 2011, the pint-sized star told Jay Leno that she changed her drinking habits: "It sucks, but no margaritas, no Long Islands. When you drink, it has to be straight vodka."