1 lb. large, purple grapes (peeled and seeds removed), 1 medium sized avocado (peeled and cut in 1 1/4" chunks), 1/2 c. pecans (chopped fine), 1 T. mayonnaise, 3-4 T. sour cream, small dash sweetener. Combine grapes and avocado in small bowl. Mix remaining ingredients together and pour over fruit. Toss lightly to coat all. Serve immediately.