Sara's Grape Salad

1 8 oz. pkg cream cheese softened
3/4 cup sour cream
1 cup white sugar or splenda
3/4 cup brown sugar
small pkg of pecans
1 lb green grapes
1 lb red grapes
(or 2 lbs of either one)

Stir together all ingredients except grapes. Mix until smooth and creamy. Pur over grapes and add pecans. Refrigerate until you serve.