You'll need:
3 oz vodka or citrus flavored vodka
1 1/2 oz triple sec or orange liqueur
1/2 oz sweetened lime juice
Juice of 1/2 fresh lime
1 1/2 oz cranberry juice
Layer the ingredients in a cocktail shaker with ice. Shake to combine and serve straight up in a chilled cocktail glass. Garnish with a slice of lime. Enjoy!