8 ounces cream cheese
8 ounces sour cream
1/3 cup sugar
2 teaspoons vanilla extract
2 pounds red grapes
2 pounds green grapes
3 tablespoons brown sugar
3 tablespoons chopped pecans

In a large bowl, beat the cream cheese, sour cream, sugar and vanilla until blended. Add grapes and toss to coat. Transfer to a serving bowl. Cover and refrigerate until serving. Sprinkle with brown sugar and pecans just before serving.