What is a simple way for me to lose 20 lb in 2to 3 months

I'm 13 I am 5ft5 and I weight 137lb what is a simple and fast way to lose 20lb so I can look good in a bikini?

Foods to Lose Weight Healthily

Recommanded Answer:
cut down on calories and workout but you 13 thats not health to cut down

• First off, don't stress about weight - it's easy to let yourself become obsessed with it. Best way to lose weight is to eat sensibly and be as physically active as possible - dull answer I know but there are no magic answers worth wasting your time with.
  
  Once again, try not to keep weight-loss in perspective.
  
  Good luck!
• 20 pounds = 70,000 calories.
  
  Let's set the goal at 700 calories a day:
  
  1) Cut out 200 calories a day from your diet. This could mean substitution water for juice and soda, not using butter, and skipping the pasta and bread.
  
  2) Since walking a mile burns about 100 calories, walking five miles a day will take care of the other 500, for a total of 700 per day.
  
  You will lose a pound a week, and it is so simple.
• Hi, here is a simple way to do that;
  Have some Special K at least once per day and have your fill of the many different types of Veggies salads out there at least twice per day. Alternate between Salad and Cereal as the mood arises and you should be on your way.