Creamy Lemon Shrimp

Name: Creamy Lemon Shrimp
Ingredients: 1/2 cup nonfat plain yogurt; 1/4 cup reduced-fat sour cream; 1/4 cup chopped fresh chives; 1/4 cup chopped fresh tarragon; 2 cloves garlic, finely chopped; 2 teaspoons Dijon mustard; 1 teaspoon olive oil; 2 teaspoons sugar; 1/2 teaspoon salt; 1/4 teaspoon freshly ground black pepper; 2 medium lemons; 1 pound cooked shrimp (any size); 2 cups broccoli florets, cut into 1/2-inch pieces; 2 cups arugula; 1 bag (8 ounces) tofu noodles, rinsed and drained (found in the Asian section of grocery store)