Bottom line: You can't. Not fast anyway. If you want to wear a bikini during the summer (like around mid may-august) then you can lose the twenty pounds. Simply cutting back on what you eat and being more active will help. I've been losing an average of thirteen lbs a month...So if I can do it (i am SO lazy) then anyone can. If you work at it, you'll b able to wear whatever you want on summer vaca. Don't give up, and good luck :)