Sweet and Sour Chicken and Rice

4  boneless, skinless chicken breasts, cooked and cubed
1 cup celery, chopped
2 cups rice, cooked
2 cans cream of chicken soup
3 tablespoon minced onions
1/2 pint sour cream
1 tablespoon Mayonnaise
1 cup corn flakes
1/3 cup slivered almonds

Mix all ingredients except corn flakes and almonds together in casserole dish.  Top with almonds and cereal. Bake at 350 degrees for one hour.  If making the day before serving, do not add topping until ready to bake.