White Peach Sangria

In a large pitcher, combine dry white wine, peach vodka, lemonade concentrate and sugar. Stir until sugar is dissolved. Add sliced peaches, red and green grapes.
Refrigerate sangria until well chilled, at least 2 hours, or overnight to blend flavors. Serve over ice, and use a slotted spoon to include sliced peaches and grapes with each serving.