Red, White and Blueberry Ice Cream Sundaes

Name: Red, White and Blueberry Ice Cream Sundaes
Yield: 6 Servings
Ingredients: 1 cup plus two 1/2-pint baskets blueberries; 2 teaspoons fresh lemon juice; 2 cups powdered sugar; 1 cup whipping cream; 1/4 cup water; 3/4 cup chilled whipping cream; 1 pint vanilla ice cream; 1 pint raspberry sorbet; 1 pint strawberry ice cream; 1/2 cup pecans, toasted, chopped