Tuna Pasta Salad

10min · 8 servings 1 (1 pound) box cellentani pasta, uncooked 2 (5 ounce) cans tuna in water, drained 1 cup grape tomatoes, halved 1/2 cup baby dill pickles, diced (about 3 baby dill pickles) 1/2 cup red onion, diced Dressing 3/4 cup mayonnaise 1/4 cup sour cream 1 tablespoon lemon juice 1 1/4 teaspoon celery salt 1/4 teaspoon pepper 1 teaspoon sugar 1 teaspoon fresh dill Garnish chopped fresh dill Salt and pepper, to taste