This little lovely is a favorite of mine. Hopefully you will enjoy it as well.
1 ounce Vodka
1/2 ounce Triple Sec
1/2 ounce Lime Juice
1/2 ounce Cranberry Juice
Shake vodka, triple sec, lime and cranberry juice vigorously in a shaker with ice. Strain into a martini glass, garnish with a lime wedge on the rim, and serve.