What is the average weight for a 14 year old 5'1" female, and a dancer? Also what is the healthiest, best and quickest way to get abs at my age?

Average 110 pounds. Average weight in the US for a 5'1" 14-year-old girl is 110 pounds. Many dancers try to keep their weight too low. Please avoid this as it can cause serious long-term health problems that will interfere with your dancing and other important things in your life. The only safe and effective way to increase definition of muscle is by exercising the muscles. Supplements and gadgets aren't helpful.