I'm 12, and I was wondering does anyone know how many liters of water a 12 year old girl should drink a day ( I NEED 2 LOOSE WEIGHT) answer!! :confused:

I think there is no standard answer for such a question, it depends on many factors including weather, activity, health condition and others,
Please check this:
Water: How much should you drink every day? (http://www.cnn.com/HEALTH/library/NU/00283.html)