Place the chicken, celery, onions, avocado, cilantro and tomatoes in a large bowl and top with the sour cream, garlic powder, salt and lime juice.
Mix well until everything is evenly coated and distributed throughout.
Serve with tortilla chips, in an avocado, tomato, in a lettuce wrap, with crackers, on top of greens, or your favorite way to eat chicken salad.
ENJOY!